Pig's Fat
Question :

If any product contains fat from pigs, can they be consumed, even if it is in very small quantity?

Answer :

If the product contains najasah even by a little amount, like the mentioned pig fat, then it is najis and prohibited to consumed.

Najis Clothes
Question :

If time is short and I know my clothing is najis, should I make the dress tahir and then make the prayer up afterwards or should I just ensure that I perform the prayers first so as to not make it qadha and then wash my clothes?

Answer :

If the only clothing available is najis, offering the prayer in such clothing is valid in cases of cold weather or similar necessities. If it can be taken off, the prayer should be offered twice, once with it and once while naked, based on compulsory precaution.
The mentioned necessity rarely occurs in our time since making use of a covering material during prayer is easily done. If not usual clothing, it can be anything like sheets, blankets or similar things as long as the private parts (as defined by the Sharia) are covered for the males and all parts of the body that must be covered for females are covered.

Attending a Wedding
Question :

If we attend a wedding reception held by Christian friend, and they serve separate halal food, is it permissible for us to dine there and consume what they claim to the halal food, while we also know that the food was cooked by Christians who may not know the Islamic dietary laws?

Answer :

If the food does not contain meat then one can consume it if he does not know that it is najis. If the food contains meat then it must be confirmed that it is slaughtered in accordance to the Sharia, in addition to not knowing that the food is najis. Confirmation of it being slaughtered in accordance to the sharia can be by knowing so himself or by a Muslim who one expects to say the truth informing him of this, or if the provider of the food claims that he obtained it from a Muslim as being slaughtered in accordance to the Sharia. The provider of the food can be non-Muslim who one does not expect to lie.

Injection on the Body
Question :

If an injection is applied on the body and it is wiped clean with alcohol, is it necessary to wash this area before praying and change the clothes which have come in contact with the alcohol?

Answer :

Yes, the body and clothes will need to be tahir before offering the prayer.

Blood in a Mosque
Question :

What is the ruling if one was in the mosque and a little bit of blood came out of his wound onto the floor of the mosque?

Answer :

It is obligatory to remove the najasah from the mosque and restore its taharah again.

Semen
Question :

Is it permissible to swallow the semen during oral sex?

Answer :

Semen is najis, and it is prohibited to swallow anything najis.

Najasah
Question :

If one causes something to become najis that is used by others as well, is it obligatory to inform them?

Answer :

It is not obligatory to do so, unless the thing made najis was previously known to be tahir and its owner trusted the individual to inform him of its condition if it becomes najis.

Considering the Office to be Najis
Question :

I live in a non-Muslim country, and I cannot offer my afternoon prayers in my office since I consider it najis, so please suggest to me what to do. Is it permissible for me to perform the prayer as qadha of these prayers in the evening?

Answer :

Delaying the prayer until after its designated time is not permissible. One can offer it even in a najis place provided that it is dry and there is no contact with dampness with it, as well as ensuring the taharah of the place of prostration.

Natural Leather
Question :

Is it prohibited to wear natural leather?

Answer :

No, it is permissible to wear natural leather; but if it was taken from an animal not slaughtered according to Islamic laws, then the leather is najis and wearing it during prayers makes it invalid and it makes whatever it comes in wet contact with najis.

Bleeding gums
Question :

My gums are very sensitive and they bleed quite easily. For example when eating a sandwich or other foods, I notice blood on the food from my gums. When brushing my teeth it bleeds quite a lot and it is time-consuming trying to purify it. So what is the ruling on blood from the gums? Is it najis? Does it make food najis?

Answer :

Yes, the said blood is najis, and you can remove the part of the sandwich that was contaminated with blood and eat the rest. The blood inside the mouth is tahir but it is impermissible to swallow it.

People who do not Care About Najasah
Question :

If the items like knives, glasses or surfaces of kitchens and bathrooms become najis by people who do not care about taharah and they continue to make them najis again and again, then what should somebody do? Is it obligatory on him to avoid those areas? What if it is hard for our hands or clothes to remain tahir all the time?

Answer :

The validity of the prayer is conditioned with the taharah of the body and the clothes of the praying person and the place of resting the forehead during prostration. The rest of the place where the person is praying does not have to be tahir but you should make sure your body or clothes do not come in contact with dampness with the rest of the place of prayer if it was najis.
It is also prohibited to consume najis foods or drinks or what comes in contact with najis things with dampness.
You are not required to check for the state of najasah in things, but you can consider things to be tahir if you do not know that they came in contact with najasah. It is not a condition or a prohibition to avoid contacting najasah or najis things in other than the mentioned cases.

Repeating the Prayers
Question :

There was a time when I had no knowledge about taharah. Must I repeat the prayers I performed during that time?

Answer :

If you did not know that the wudhu was invalid because of the najasah then the prayer is correct.

Non-Muslim Worker
Question :

I attend an office of one of my Muslim friends, where there is a person who serves coffee and does the cleaning tasks at the office. I am not sure if he is a Muslim or not. Can I drink from the coffee he serves?

Answer :

It is permissible to drink the coffee, as long as there is a reasonable possibility that the coffee is Tahir.

Perfume with Alcohol
Question :

Is there any objection to wear perfume that contains alcohol when praying or any other kind of worship?

Answer :

If alcohol causes intoxication than it is najis, and the prayer and the tawaf is void if one wears a perfume that contains such alcohol.

Tasting Food
Question :

I am working in a kitchen as a cook. I was wondering if it was permissible for me to taste food that is not permissible to consume.

Answer :

You can taste the food that is prohibited to consume provided that you do not swallow it, and you should make your mouth tahir too if the food was najis.

No Time to Cook Food
Question :

I live in a place where I do not have time to cook food due to work and extreme fatigue after work hours; seafood restaurants are very far away from my office and home, and they are very expensive; halal restaurants are not easily available. In such circumstances, if I eat the meat of the People of the Book, even though I have heard that it is not permissible; would it be considered a sin?

Answer :

The mentioned circumstances provide no justification to consume prohibited food, and it is a sin to do so.

Unaware of Najasah
Question :

If a person is unaware that after urinating and wiping the penis with dry material he is still supposed to wash it with water, is it tahir? Does he have to repeat all prayers as qadha?

Answer :

The urinary organ is still considered to be najis, but his previous prayers are not void if the person was unaware of the najasah on the body or the clothes. However, for future prayers he must make the part tahir with water.