According to some narrations, Imam Ja’far ibn Muhammad al-Sadiq (عليه السلام) departed life on the twenty fifth of Shawwal, AH 148. However, other historians have decided that he departed life on the fifteenth of Rajab. The reason of his death was that he was offered poisoned grapes. It has been also narrated that at his last hours, he (عليه السلام) gathered all his relatives and said to them, “Our Intercession (shafa’ah) shall not be reach those who take their prayers lightly.”