Sahih Muslim 496
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 reported:
حَدَّثَنَا يَحْيَى بْنُ يَحْيَى ، وَابْنُ أَبِي عُمَرَ ، جَمِيعًا عَنْ سُفْيَانَ ، - قَالَ يَحْيَى أَخْبَرَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، - عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ الأَصَمِّ ، عَنْ عَمِّهِ، يَزِيدَ بْنِ الأَصَمِّ عَنْ مَيْمُونَةَ ، قَالَتْ كَانَ النَّبِيُّ صلى الله عليه وسلم إِذَا سَجَدَ لَوْ شَاءَتْ بَهْمَةٌ أَنْ تَمُرَّ بَيْنَ يَدَيْهِ لَمَرَّتْ .
When the Messenger of Allah (ﷺ) prostrated himself, if a lamb wanted to pass between his arms, it could pass.