On it being disliked to pray when food has been served or when one needs to go to the lavatory

Riyad as-Salihin (The Meadows of the Righteous)

by Imam Nawawi

339. Chapter: On it being disliked to pray when food has been served or when one needs to go to the lavatory

1753. 'A'isha said, "I heard the Messenger of Allah, may Allah bless him and grant him peace, say, 'There is no prayer when food is present nor when one needs to relieve oneself in either way." [Muslim]