Yazīd ibn Hayyān reported: I went along with Husayn ibn Sabrah and ‘Amr ibn Muslim to Zayd ibn Arqam (may Allah be pleased with him). As we sat by his side, Husayn said to him: "O Zayd, you have acquired a great virtue as you saw the Messenger of Allah (may Allah’s peace and blessings be upon him) listened to his words, fought by his side (in different battles), and offered prayer behind him. You have, in fact, earned a great virtue. Could you narrate to us what you heard from the Messenger of Allah (may Allah’s peace and blessings be upon him)?" He said: "I have grown old and it has been long. I have forgotten some of what I memorized from the Messenger of Allah (may Allah’s peace and blessings be upon him); so accept whatever I narrate to you, and do not compel me to narrate what I fail to narrate." He then said: "One day, the Messenger of Allah (may Allah’s peace and blessings be upon him) stood up to deliver a sermon at a watering place known as Khumm located between Makkah and Madīnah. He praised Allah, extolled Him, and gave us an admonition and reminder. He then said: 'O people! I am only a human being. I am about to receive a messenger (the angel of death) from my Lord and I will respond to Allah's call, but I am leaving with you two weighty things; the first is the Book of Allah, in which there is right guidance and light. So hold fast to the Book of Allah and adhere to it.' He exhorted us to hold fast to the Book of Allah and then said: 'And members of my family. I remind you of Allah with regard to members of my family. I remind you of Allah with regard to members of my family.'" Husayn said to Zayd: "Who are the members of his family, O Zayd? Are his wives not members of his family?" Thereupon Zayd said: "His wives are members of his family. But here, the members of his family are those for whom Zakah is forbidden." He asked: "Who are they?" Zayd said: "The household of ‘Ali, ‘Aqīl, Ja‘far, and ‘Abbās." Husayn asked: "Is Zakah forbidden for all of them?" He said: 'Yes!'
In another narration, the Prophet (may Allah's peace and blessings be upon him) said: "But I am leaving with you two weighty things; the first is the Book of Allah, and it is the rope of Allah. Whoever holds fast to it shall be on the path of guidance, and whoever abandons it shall be on the path of error.”Narrated by Muslim
