صحيح مسلم

Abu Musa reported: I was in the company of Allah's Messenger (ﷺ) as he had been sitting in Ji'rana (a place) between Mecca and Medina and Bilal was also there, that there came to Allah's Messenger (ﷺ) a desert Arab, and he said: Muhammad, fulfill your promise that you made with me. Allah's Messenger (ﷺ) said to him: Accept glad tidings. Thereupon the desert Arab said: You shower glad tidings upon me very much; then Allah's Messenger (ﷺ) turned towards Abu Musa and Bilal seemingly in a state of annoyance and said: Verily he has rejected glad tidings but you two should accept them. We said: Allah's Messenger, we have readily accepted them. Then Allah's Messenger (ﷺ) called for a cup of water and washed his hands in that and face too and put the saliva in it and then said: Drink out of it and pour it over your faces and over your chest and gladden yourselves. They took hold of the cup and did as Allah's Messenger (ﷺ) had commanded them to do. Thereupon Umm Salama called from behind the veil: Spare some water in your vessel for your mother also, and they also gave some water which had been spared for her.