سُنَنُ النَّسَائِيِّ
Sunan an-Nasa’i 1082
The Book of The At-Tatbiq (Clasping One's Hands Together)
The Takbir when prostrating
أَخْبَرَنَا يَحْيَى بْنُ حَبِيبِ بْنِ عَرَبِيٍّ، قَالَ حَدَّثَنَا حَمَّادٌ، عَنْ غَيْلاَنَ بْنِ جَرِيرٍ، عَنْ مُطَرِّفٍ، قَالَ صَلَّيْتُ أَنَا وَعِمْرَانُ بْنُ حُصَيْنٍ، خَلْفَ عَلِيِّ بْنِ أَبِي طَالِبٍ فَكَانَ إِذَا سَجَدَ كَبَّرَ وَإِذَا رَفَعَ رَأْسَهُ مِنَ السُّجُودِ كَبَّرَ وَإِذَا نَهَضَ مِنَ الرَّكْعَتَيْنِ كَبَّرَ فَلَمَّا قَضَى صَلاَتَهُ أَخَذَ عِمْرَانُ بِيَدِي فَقَالَ لَقَدْ ذَكَّرَنِي هَذَا - قَالَ كَلِمَةً يَعْنِي - صَلاَةَ مُحَمَّدٍ صلى الله عليه وسلم .
It was narrated that Mutarrif said: "Imran bin Husain and I prayed behind Ali bin Abi Talib. When he prostrated he said the Takbir, and when he raised his head from prostration he said the takbir, and when he stood up following two rak'ahs he said the takbir, and when he had finished praying, 'Imran took my hand and said: 'This reminded me of- he said a word meaning- the prayer of Muhammad (ﷺ).'"
Sunan an-Nasa'i, 1082Sahih (Darussalam)