The ruling on the ma'mum (one praying behind the imam) saying the closing salam before the imam
Machine translationRead the Arabic original
Question:
Honorable Shaykh, may Allah grant you success. He says: If the ma'mum says the closing salam before the imam, whether out of forgetfulness or intentionally, what is obligatory for him?
Answer:
If he did it intentionally, his prayer is invalid. If he did it out of forgetfulness, he returns to say the salam after the imam, and he owes nothing. Yes.
Honorable Shaykh, may Allah grant you success. He says: If the ma'mum says the closing salam before the imam, whether out of forgetfulness or intentionally, what is obligatory for him?
Answer:
If he did it intentionally, his prayer is invalid. If he did it out of forgetfulness, he returns to say the salam after the imam, and he owes nothing. Yes.
Source
شرح كتاب المنتقى من أخبار المصطفى صلى الله عليه وسلم، بداية من باب الرخصة في إعادة الجماعة وركعتي الطواف في كل وقت — islamhouse.com (56:35)
The Arabic text is a machine transcription of the audio recording.