مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1902
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn "Abbas that the Prophet (ﷺ) drank from a bucket of Zamzam whilst standing. Sufyan said: That is what I thought.
Musnad Ahmad 1903Sahih (Darussalam) [, al-Bukhari {1637) and Muslim (2027)]