We say: Every form of the adhān established in the sunnah is permissible. Rather, what should be done is to give the adhān in one manner at times and in another manner at other times, so long as this does not lead to confusion or discord.

According to Mālik, it consists of seventeen phrases: the opening declaration of Allah’s greatness is said twice, together with tarjīʿ (repetition of the two testimonies): that is, he says the two testimonies quietly to himself, then says them aloud. (1)

According to al-Shāfiʿī, it consists of nineteen phrases: the opening declaration of Allah’s greatness is said four times, together with tarjīʿ. (2) All of these forms are established in the sunnah. Thus, if you give the adhān in one manner on one occasion and in another manner on another occasion, that is preferable.

The principle is that acts of worship transmitted in a variety of forms should be performed in those various forms. Varying them has several benefits:

First: preserving the sunnah and spreading its various forms among the people.

Second: making matters easier for the legally responsible person, for some forms may be lighter than others when there is a need to act upon them.

Third: keeping the heart present and preventing it from becoming weary and bored.