مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2238
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn 'Abbas (رضي الله عنه) that the Messenger of Allah (ﷺ) called for a drink, and I gave him a bucket of Zamzam water, and he drank whilst standing.
Musnad Ahmad 2244Its isnad is saheeh, al-Bukhari (1637) and Muslim (2027)]