Abdullah bin Umar reported,

We used to eat while walking and drink while standing during the time of the Messenger of Allah ﷺ.

Azami 14388

Sahih

عن ابن عمر قال

كنا نأكل على عهد رسول الله ﷺ ونحن نمشي، ونشرب ونحن قيام.

الأعظمي 14388صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Superior moral conduct
Chapter
Etiquette of eating and drinking
Section
Permissibility of drinking while standing
Numbering
Jami al-Kamil 14388 (2nd edition)
Azami 14388