BackHis will to his son

Imam Zayn ul-'Abidin, peace be upon him, martyred on 25th of Moharram, entrusted his commandments to his son Imam Mohammed al-Baqir, peace be on him. One of them was this

"O my little son, I will command you with what my father commanded me when death was close to him. He said to me: 'O my little son, beware of wronging him who finds no helper against you except Allah'.
(Al-Ama`li, p. 161. Al-Khisa`l, p. 185)