The ma'mum leaving a pillar of the prayer with the imam, such as prostration
Machine translationRead the Arabic original
Question:
Honorable Shaykh, if the ma'mum enters the prayer with the imam from the beginning, and then the ma'mum leaves a pillar of the prayer, such as not prostrating with the imam until the imam has risen from prostration, is it obligatory for him to prostrate after the imam has risen, or must he repeat the rak'ah?
Answer:
If he did it intentionally, his prayer is not accepted. But if he did not do it intentionally, and he did not hear the imam until the imam finished the prostration or the bowing, then he performs it afterwards and catches up with the imam; he performs the bowing or the prostration and catches up with the imam, and his prayer is valid because he is excused for being late. Yes.
Honorable Shaykh, if the ma'mum enters the prayer with the imam from the beginning, and then the ma'mum leaves a pillar of the prayer, such as not prostrating with the imam until the imam has risen from prostration, is it obligatory for him to prostrate after the imam has risen, or must he repeat the rak'ah?
Answer:
If he did it intentionally, his prayer is not accepted. But if he did not do it intentionally, and he did not hear the imam until the imam finished the prostration or the bowing, then he performs it afterwards and catches up with the imam; he performs the bowing or the prostration and catches up with the imam, and his prayer is valid because he is excused for being late. Yes.
Source
شرح بلوغ المرام من أدلة الأحكام [ صالح الفوزان ]، باب حد السرقة — islamhouse.com (1:15:44)
The Arabic text is a machine transcription of the audio recording.