Messenger of Allah ﷺ forbade the bending of the mouths of water skins for the sake of drinking from them.  

عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ ؓ قَالَ نَهَى رَسُولُ اللَّهِ ﷺ عَنِ اخْتِنَاثِ الأَسْقِيَةِ يَعْنِي أَنْ تُكْسَرَ أَفْوَاهُهَا فَيُشْرَبَ مِنْهَا  

I heard Messenger of Allah ﷺ forbidding the drinking of water by bending the mouths of water skins, i.e., drinking from the mouths directly.  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَنْهَى عَنِ اخْتِنَاثِ الأَسْقِيَةِ قَالَ عَبْدُ اللَّهِ قَالَ مَعْمَرٌ أَوْ غَيْرُهُ هُوَ الشُّرْبُ مِنْ أَفْوَاهِهَا  

Abu Sa'id Khudri reported that Allah's, Messenger (may peace he upon him) forbade from turning the waterskins upside down and drinking from their mouths.  

أَنَّهُ قَالَ نَهَى رَسُولُ اللَّهِ ﷺ عَنِ اخْتِنَاثِ الأَسْقِيَةِ أَنْ يُشْرَبَ مِنْ أَفْوَاهِهَا  

“The Messenger of Allah ﷺ forbade tipping up water skins in order to drink from their mouths.”  

نَهَى رَسُولُ اللَّهِ ﷺ عَنِ اخْتِنَاثِ الأَسْقِيَةِ أَنْ يُشْرَبَ مِنْ أَفْوَاهِهَا  

“The Messenger of Allah ﷺ forbade tipping up water skins in order to drink from their mouths.” (Using translation from Ibn Mājah 3418)  

«نَهَى رَسُولُ اللَّهِ ﷺ عَنِ اخْتِنَاثِ الْأَسْقِيَةِ أَنْ يُشْرَبَ مِنْ أَفْوَاهِهَا»