muslim narrated that anas said:” gabriel came to the messenger (pbuh) and laid him down. then he split his chest and took out his heart, and took a leech and said:" this is the share of the devil from you". gabriel washed his heart with the water of zamzam - a well in makkah- in a golden tub. after that he gathered his heart together and put it in its place back again. the children had gone to his nursing mother and told her that muhammed was murderd. when she found him he was pale. anas mentioned that he saw the place of the splitting in his chest.