Adhan
Question :

Is the adhan recited before Asr and Isha prayers?

Answer :

The adhan is recommended in the daily prayers. However, if the Asr or Isha prayer is performed immediately after Dhuhr or Maghrib prayers, the Adhan is not legislated, so the iqamah alone can be recited.

Adhan for the Second Time
Question :

Is it forbidden in Shi'ism to recite the Adhan for the second time for Dhuhr Prayer on Fridays?

Answer :

Reciting it for the second time is not legislated on Friday or on any other day.

The Adhan and Iqamah in Qadha Prayer
Question :

Does the Qadha prayer require the Adhan and Iqamah, or just the Iqamah?

Answer :

Performing the Adhan and Iqamah is recommended, not obligatory, for the daily prayers even if they are Qadha prayers.

Iqamah
Question :

Is Iqamah compulsory before the prayers?

Answer :

Reciting the Iqamah is recommended and not obligatory.

Third Testimony During Adhan
Question :

When I am saying the adhan at the beginning of prayer do I add "Ashhadu Anna Aliyyan Waliyullah" and is it vital? Or is the belief that he is the Wali of Allah enough and does not need to be recited in adhan before prayer?

Answer :

It is recommended to recite "Ash hadu Anna Aliyyan Waliyullah" in the Adhan, but not with the intention that it is part of the adhan. It is recommended just like reciting the blessing upon the Holy Prophet (the Salawat) after mentioning his name in the adhan.