If a latecomer joins the prayer while the imam is in prostration, does he say the takbir, recite the opening supplication, and then prostrate?
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Question:
If a latecomer joins the prayer while the imam is in prostration, does he say the takbir, recite the opening supplication, and then prostrate? No.
Answer:
Yes, he says the takbir and prostrates, catching up with the imam, just as if he arrived while the imam was bowing; he says the takbir and bows with the imam to catch the bowing. He does not stand to recite al-Fatihah or the opening supplication. No, yes.
If a latecomer joins the prayer while the imam is in prostration, does he say the takbir, recite the opening supplication, and then prostrate? No.
Answer:
Yes, he says the takbir and prostrates, catching up with the imam, just as if he arrived while the imam was bowing; he says the takbir and bows with the imam to catch the bowing. He does not stand to recite al-Fatihah or the opening supplication. No, yes.
Source
قناة «العلامة الدكتور صالح الفوزان»، [310 -582] إذا دخل المأموم في الصلاة والإمام ساجد فهل يكبر ويقرأ الاستفتاح ثم يسجد؟ — youtube.com
The Arabic text is a machine transcription of the audio recording.