Bending the mouth of water skins
حَدَّثَنَا نَصْرُ بْنُ عَلِيٍّ، حَدَّثَنَا عَبْدُ الأَعْلَى، حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ عُمَرَ، عَنْ عِيسَى بْنِ عَبْدِ اللَّهِ، - رَجُلٍ مِنَ الأَنْصَارِ - عَنْ أَبِيهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم دَعَا بِإِدَاوَةٍ يَوْمَ أُحُدٍ فَقَالَ " اخْنُثْ فَمَ الإِدَاوَةِ " . ثُمَّ شَرِبَ مِنْ فِيهَا .
A man of the Ansar quoting from his father said that the Prophet (ﷺ) called for a skin-vessel on the day of the battle of Uhud. He then said: Invert the head of the vessel and he drank from its mouth.