Splitting of the Chest

While the young Muhammad was playing with other children among Banu Sa'd, two angels came to him, laid him down, opened his chest, removed his heart, extracted a black clot from it, washed the heart with Zamzam water in a golden basin, and restored it. This event purified his heart and prepared him for his future mission. Halimah, alarmed by the incident, returned him to his mother Aminah in Mecca.