Speaking in prayer

Sayyiduna Uthman (may Allah be pleased with him) said: Nothing invalidates the prayer except speech and the breaking of ablution.

Shu'bah said: I asked al-Hakam and Hammad what the ruling is if a man speaks during the prayer. They said: If he spoke after he had completed the prayer, while adding something extra, then his prayer is valid and he should perform the prostrations of forgetfulness; and if he spoke before completing the prayer, he must pray it again.

Al-Hasan said: He must pray it again.

Ibrahim said: If a man speaks during the prayer, he must repeat the prayer, but he does not need to repeat the ablution.