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.  

كَانَ رَسُولُ اللَّهِ ﷺ إِذَا سَجَدَ جَافَى حَتَّى يَرَى مَنْ خَلْفَهُ وَضَحَ إِبْطَيْهِ قَالَ وَكِيعٌ يَعْنِي بَيَاضَهُمَا  

[Machine] The Prophet Muhammad ﷺ used to lean forward while performing prostration until the whiteness of his armpits was visible to those behind him.  

كَانَ النَّبِيُّ ﷺ إِذَا سَجَدَ جَافَى حَتَّى يَرَى مَنْ خَلْفَهُ بَيَاضَ إِبْطَيْهِ  

[Machine] "Al-Asamm'iann Maymunah, the wife of the Prophet ﷺ , said: The Messenger of Allah ﷺ used to spread out his hands when he prostrated, until he could see those behind him, and his armpits would be visible."  

الْأَصَمِّعَنْ مَيْمُونَةَ زَوْجِ النَّبِيِّ ﷺ قَالَتْ كَانَ رَسُولُ اللهِ ﷺ إِذَا سَجَدَ جَافَى بِيَدَيْهِ حَتَّى يَرَى مَنْ خَلْفَهُ وَضَحَ إِبْطَيْهِ  

[Machine] The Messenger of Allah ﷺ used to lower himself down in prostration until the whiteness of his armpits could be seen by those behind him.  

كَانَ رَسُولُ اللهِ ﷺ إِذَا سَجَدَ جَافَى حَتَّى يَرَى مَنْ خَلْفَهُ بَيَاضَ إِبْطَيْهِ  

[Machine] Narrated Maymuna bint Al-Harith, the wife of the Prophet Muhammad ﷺ , said, "When the Messenger of Allah ﷺ prostrated, his back would become hollowed and his armpits would widen open."  

عَنْ مَيْمُونَةَ بِنْتِ الْحَارِثِ زَوْجِ النَّبِيِّ ﷺ قَالَتْ كَانَ رَسُولُ اللهِ ﷺ «إِذَا سَجَدَ جَافَى حَتَّى يُرَى خَلْفُهُ وَفَتَحَ إِبْطَيْهِ»  

[Machine] The Messenger of Allah ﷺ used to sit in a manner that when he bowed down in prostration, his armpit would touch his knee. He would lean on his right side and stretch out his left side.  

كَانَ رَسُولُ اللهِ ﷺ «إِذَا سَجَدَ جَافَى حَتَّى يُرَى وَضَحَ إِبْطَيْهِ يَتَّكِئُ عَلَى الْيُمْنَى وَيُرْخِي الْيُسْرَى»  

" كَانَ رَسُولُ الله ﷺ إِذَا سَجَدَ جَافَى حَتَّى يُرَى بَيَاضُ إِبِطَيْهِ ".  

"كَانَ النَّبِيُّ ﷺ إِذَا سَجَدَ رَأَىَ مَنْ خَلفَهُ بَيَاضَ إِبْطَيْهِ".