It was narrated from Ibn ‘Abbas.

The Prophet (ﷺ) drank with Ibn "Abbas on his right and Khalid bin al-Waleed on his left. The Prophet (ﷺ) said to him [Ibn "Abbas]: "The drink is yours, but if you want you can give precedence to Khalid.” He said: I will not give precedence to anyone with regard to the leftover water of the Messenger of Allah (ﷺ).