There are ahaadeeth which say that the Prophet (peace and blessings of Allaah be upon him) forbade drinking whilst standing. For example, Muslim (2024, 2025) narrated from Anas and Abu Sa’eed al-Khudri (may Allaah be pleased with him) that the Prophet (peace and blessings of Allaah be upon him) forbade drinking whilst standing.
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