Validity of the Prayer
Question :

If someone had been doing wudhu incorrectly and never knew it, does he have to repeat all the past prayers?

Answer :

Yes, it is obligatory to make up the past prayers.

Touching the Quran
Question :

Is one required to have wudhu while touching an English translation of the Holy Quran?

Answer :

No, one does not need to perform wudhu in order to touch the translation of the Quran.

786
Question :

Is "786" considered as "Bismillahir-Rahmanir-Raheem"? What is the ruling of touching it without wudhu?

Answer :

There is no problem in writing it to refer to the Besmalah, but the laws pertaining to the actual Besmalah, like the prohibition of touching it without the state of ablution, are not applicable to it.

Name of Allah
Question :

Is wudhu required to touch the name of Allah that are written in English?

Answer :

Based on an obligatory precaution, it is not permissible to touch the word "Allah" and His other names in any language without wudhu. If the name of "Allah" is written on paper bills then it is permissible to be touched without wudhu.

Engraved Inscription on the Turbah
Question :

If there is an engraved inscription on the Turbah (the clay tablet on which we prostrate) with the name of Allah, and it is imprinted on the forehead after prostration, is one allowed to leave the state of ritual purity, or must he stay in purity, due to having the name of Allah on one's forehead, albeit reversed?

Answer :

It is permissible to leave the state of ritual purity.