Sahih al-Bukhari Book 74, Hadith 52

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

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

Sahih al-Bukhari Book 74, Hadith 51
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Allah's Messenger (ﷺ) forbade drinking directly from the mouth of a water skin or other leather containers. and forbade preventing one's neighbor from fixing a peg in (the wall of) one's house.

Sahih al-Bukhari Book 74, Hadith 53