Narrated by Ya'qub ibn Yazid, from Al-Ghifari, from Ibrahim ibn Ali, from Imam Ja’far Al Sadiq عليه السلام, from his father Imam Al Baqir عليه السلام: Imam عليه السلام said: "The grave of the Messenger of Allah سبحانه وتعالى, peace be upon him and his family, was raised a span above the ground, and the Prophet صلى الله عليه وعلى آله وسلم commanded that graves be sprinkled with water."