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حَدَّثَنَا مُسَدَّدٌ قَالَ حَدَّثَنَا مُعْتَمِرٌ قَالَ سَمِعْتُ أَبِي قَالَ حَدَّثَنِي بَكْرٌ عَنْ أَبِي رَافِعٍ قَالَصَلَّيْتُ مَعَ أَبِي هُرَيْرَةَ الْعَتَمَةَ فَقَرَأَ إِذَا السَّمَاءُ انْشَقَّتْ فَسَجَدَ فَقُلْتُ مَا هَذِهِ قَالَ سَجَدْتُ بِهَا خَلْفَ أَبِي الْقَاسِمِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَلَا أَزَالُ أَسْجُدُ فِيهَا حَتَّى أَلْقَاهُ

Musaddad narrated to us, Mu'tamir narrated to us, saying, I heard my father say, Bakr narrated to me, from Abu Rafi', who Sa'd 'I prayed the 'Atmah (Isha at the end of the night) with Abu Hurairah (may Allah be pleased with him). He recited "Idha as-samaa-unshaqqat" (Surah Al-Inshiqaq) and prostrated. I Sa'd "What is this?" He Sa'd "I prostrated in it behind Abu Al-Qasim peace and blessings be upon him, and I will continue to prostrate in it until I meet him."'