Al-Kāfi, vol. 7, no. 53

4. A number of our people have narrated from Sahl ibn Ziyad from Muhammad ibn al-Walid from Yunus ibn Ya’qub who has narrated the following: “A man of Hamadan has said that his father died but he did not know this fact (the Divine Authority of A’immah). He made a will when he was about to die to give something in the way of Allah. He (the man from Hamadan) asked abu ‘Abd Allah, Alayhi al-Salam, about it and that he did not know this fact (the Divine Authority of A’immah). He (the Imam) said, ‘If the man had appointed me to execute his will to give to a Jews or Christians, I would have given it to them because Allah, most Majestic, most Glorious, says, “Whoever intentionally changes the will of a deceased person, he has committed a sin. Allah is All-hearing and All-knowing.” (2:181) You must see who serves as guards and defenders of the borders; and give it to them.’”