3. A number of our people have narrated from Sahl ibn Ziyad from Ali ibn Mahziyar from who has narrated the following: “Abu Ja‘far, Alayhi al-Salam, wrote to Ja‘far and Musa, this instruction. ‘In the matter of my commanding you to appoint witnesses to so and so issues; it is because it is for your safety and protection in the next world in matters of executing the will, as it requires, that your parents have made to you and your being kind to your parents. You must remain prudent. You must not change their will and alter it from its original condition because they are no more. May Allah be happy with them. It, however, has remained on your shoulder. Allah, most Blessed, most High, has said in His book, “Whoever intentionally changes the will of a deceased person, he has committed a sin. Allah is All-hearing and All-knowing.” (2:181)’”