There are differing narrations regarding the identity of the sacrificed one. Some state it was Isma'il, while others state it was Ishaq. It is not permissible to reject any report if its chain of transmission is authentic. The sacrificed one was Isma'il; however, when Ishaq was later born, he wished that he had been the one whom his father was commanded to sacrifice. He would have endured and submitted to Allah’s سبحانه وتعالى command just as his brother did, thereby attaining a similar rank in reward. Allah سبحانه وتعالى, the Mighty and Majestic, knew this desire in Ishaq’s heart and thus named him "the sacrificed one" (Dhabih) among His angels because of his wish. I have provided the chain of transmission for this in the Book of Prophethood connected to Imam Jafar ibn Muhammad Al-Sadiq عليه السلام.
Commentary #15