A group of narrators informed me from Harun ibn Musa, from Abu al-‘Abbas Ahmad ibn Muhammad, from ‘Ali ibn al-Hasan, and Ahmad ibn ‘Abdun, from Abu al-Hasan ‘Ali ibn Muhammad ibn al-Zubayr, from ‘Ali ibn al-Hasan ibn Faddal, from Muhammad ibn ‘Abdullah ibn Zurarah, from Muhammad ibn Abi ‘Umayr, from Hammad ibn ‘Uthman, from ‘Ubaydullah al-Halabi and Muhammad ibn Muslim, from Abu ‘Abdullah عليه السلام: Imam عليه السلام said: "My father (Imam Al Baqir عليه السلام) instructed me to make the height of his grave the width of four spread fingers. He (Imam Al Baqir عليه السلام) also mentioned that sprinkling water on the grave is good and said, 'Perform ablution (Wudu) when you place the deceased in the grave.'"