صحیح مسلم · Hadith 1202

Abdullah (b. Masu'd) reported: We used to greet the Messenger of Allah ( ‌صلی ‌اللہ ‌علیہ ‌وسلم ‌ ) while he was engaged in prayer and he would respond to our greeting. But when we returned from the Negus we greeted him and he did not respond to us; so we said: Messenger of Allah. we used to greet you when you were engaged in prayer and you would respond to us. He replied: Prayer demands whole attention.

Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020