Sahih al-Bukhari 5616

Ādam narrated to us: Shuʿbah narrated to us: ʿAbd al-Malik ibn Maysarah narrated to us: I heard al-Nazzāl ibn Sabrah report from ʿAlī (may Allah be pleased with him) that he prayed the noon prayer, then sat attending to people’s needs in the open area of Kūfah until the afternoon prayer was due. Water was then brought to him. He drank, washed his face and hands, and wiped his head and feet. Then he stood and drank what remained while standing. He said, “Some people dislike drinking while standing, but the Prophet ﷺ did just as I have done.”