Sahih Muslim 497
Sahih Muslim · Book 4: The Book of Prayers · The Description Of The Prayer, With What It Begins And Ends. The Description Of Bowing And Moderation Therein, And Of Prostration And Moderation Therein. Tashah-hud After Each Two Rak'ah Of Four Rak'ah Prayers. Description Ol Sitting Between The Two Prostrations, And In The First Tashah-hud
Maimuna daughter of Harith reported:
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ ، وَعَمْرٌو النَّاقِدُ، وَزُهَيْرُ بْنُ حَرْبٍ ، وَإِسْحَاقُ بْنُ إِبْرَاهِيمَ ، - وَاللَّفْظُ لِعَمْرٍو - قَالَ إِسْحَاقُ أَخْبَرَنَا وَقَالَ الآخَرُونَ، حَدَّثَنَا وَكِيعٌ ، حَدَّثَنَا جَعْفَرُ بْنُ بُرْقَانَ ، عَنْ يَزِيدَ بْنِ الأَصَمِّ ، عَنْ مَيْمُونَةَ بِنْتِ الْحَارِثِ ، قَالَتْ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِذَا سَجَدَ جَافَى حَتَّى يَرَى مَنْ خَلْفَهُ وَضَحَ إِبْطَيْهِ . قَالَ وَكِيعٌ يَعْنِي بَيَاضَهُمَا .
When the Messenger of Allah (ﷺ) prostrated, he kept his hands so much apart from each other that when it was seen from behind the armpits became visible. Waki' said: That is their whiteness.