The ruling on a person praying an obligatory prayer behind a person praying a voluntary prayer
Machine translationRead the Arabic original
Question:
A man entered after a liar who was praying the Fajr prayer, and a man was praying the Fajr prayer, so he stood to his right saying, if he had prayed Fajr with him, what is the condition of his prayer? The word of faith does not require recitation.
Answer:
There is no harm in that, and on the correct view, it is permissible for the one who is making up a missed prayer to follow the one who is praying a voluntary prayer, just as the Companions used to pray behind Mu'adh while he had already prayed with the Prophet (peace and blessings be upon him), and the Prophet (peace and blessings be upon him) insisted on that, so there is no harm in that, and reciting aloud is not obligatory, but rather it is a recommended practice.
A man entered after a liar who was praying the Fajr prayer, and a man was praying the Fajr prayer, so he stood to his right saying, if he had prayed Fajr with him, what is the condition of his prayer? The word of faith does not require recitation.
Answer:
There is no harm in that, and on the correct view, it is permissible for the one who is making up a missed prayer to follow the one who is praying a voluntary prayer, just as the Companions used to pray behind Mu'adh while he had already prayed with the Prophet (peace and blessings be upon him), and the Prophet (peace and blessings be upon him) insisted on that, so there is no harm in that, and reciting aloud is not obligatory, but rather it is a recommended practice.
Source
شرح ثلاثة الأصول وأدلتها، معرفة دين الإسلام بالأدلة - أركان الإسلام وبيانها بأدلتها — islamhouse.com (1:10:17)
The Arabic text is a machine transcription of the audio recording.