I saw ‘Ali ؓ drinking whilst standing and I said: Do you drink whilst standing? He said: if I drink whilst standing, i saw the Messenger of Allah ﷺ drink whilst standing, and if I drink whilst sitting, I saw the Messenger of Allah ﷺ drink whilst sitting.
عَنْ مَيْسَرَةَ رَأَيْتُ عَلِيًّا شَرِبَ قَائِمًا فَقُلْتُ تَشْرَبُ وَأَنْتَ قَائِمٌ؟ قَالَ إِنْ أَشْرَبْ قَائِمًا فَقَدْ رَأَيْتُ رَسُولَ اللهِ ﷺ يَشْرَبُ قَائِمًا وَإِنْ أَشْرَبْ قَاعِدًا فَقَدْ رَأَيْتُ رَسُولَ اللهِ ﷺ يَشْرَبُ قَاعِدًا