“Abu ‘Abd Allah (a.s.), has said that when a man completes Tawaf and the two Rak‘at salat (prayer), he should go to Zamzam. He should take one or two containers full of water, drink, pour on his head, back and belly and say, ‘O Allah, make it useful knowledge, abundant sustenance and a cure for all illnesses and deficiencies,’ and then go back to the Black Stone.’”