Anas ibn Malik reported: The Prophet, peace and blessings be upon him, prohibited a man from drinking while standing up. We said, “And eating?” Anas said, “That is even worse.”
Source: Ṣaḥīḥ Muslim 2024
Grade: Sahih (authentic) according to Muslim
Imam al-Nawawi commented, “The correct opinion is that the prohibition of eating while standing is understood to be moderately discouraged. As for the Prophet drinking while standing, it is clearly permissible.”
Source: Sharḥ al-Nawawī ‘alá Ṣaḥīḥ Muslim 13/195
عَنْ أَنَسٍ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَّهُ نَهَى أَنْ يَشْرَبَ الرَّجُلُ قَائِمًا قَالَ فَقُلْنَا فَالْأَكْلُ فَقَالَ ذَاكَ أَشَرُّ
2024 صحيح مسلم الكتاب الأشربة باب كراهية الشرب قائما
قال النووي وَالصَّوَابُ فِيهَا أَنَّ النَّهْيَ فِيهَا مَحْمُولٌ عَلَى كَرَاهَةِ التَّنْزِيهِ وَأَمَّا شُرْبُهُ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَائِمًا فَبَيَانٌ لِلْجَوَازِ
13/195 شرح النووي على مسلم