2-98 Muhammad ibn al-Hassan ibn Ahmad ibn al-Walid - may God be pleased with him - narrated that Muhammad ibn al-Hassan al-Saffar quoted Muhammad ibn al-Hussein ibn Abil-Khat’tab and Ya'qub ibn Yazid, on the authority of Muhammad ibn Abi Umayr, on the authority of Abdullah ibn Sin’an, on the authority of Ma’ruf ibn Kharabudh, on the authority of Abul Tufayl 'Amir ibn Wathila, on the authority of Hudhaifa ibn Usayd al-Ghaffari: “When God’s Prophet صلى الله عليه وعلى آله وسلم returned from the Farewell Pilgrimage we were with him. When we reached Al-Juhfa, the Prophet صلى الله عليه وعلى آله وسلم ordered his companions to relax. Then the people all settled down. Then they said the call to prayer and the Prophet صلى الله عليه وعلى آله وسلم said two units of prayers with his companions. Then the Prophet صلى الله عليه وعلى آله وسلم turned towards them and told them, ‘The Graceful, the All-Aware has informed me that I will die and so shall you. Assume that I have answered God’s call. I am held responsible to God regarding what I have delivered to you. Verily, I am leaving behind God’s Book and His Proof. You are held responsible for them. What would you tell your Lord?’ They said, ‘We will say that you fulfilled your mission, gave us advice, and strived. May God grant you the best reward on our behalf.’ Then the Prophet صلى الله عليه وعلى آله وسلم asked them, 'Don’t you bear witness that there is no god but One; that I am God’s Prophet sent to you; that Paradise does exist; that Hell does exist; and that there is resurrection after death?' They replied, 'We bear witness to this.' The Prophet صلى الله عليه وعلى آله وسلم said, 'May God bear witness to what you say. I take you as witnesses and bear witness that God is my Master. I am the Master of all Muslims. Is it not true that my Mastery over the believers is more than that of their own mastery over themselves? Do you believe in this? Will you bear witness to this?' They replied, 'We bear witness to this.' Then the Prophet صلى الله عليه وعلى آله وسلم said, 'Whoever I am the Master of, Ali is the Master of.' Then he grabbed Ali’s hand and raised it up along with his own hand in such a way that both their underarms could be seen. Then the Prophet صلى الله عليه وعلى آله وسلم said, 'O my God! Please be the friend of his friends and be the enemy of his enemies. Assist whoever assists him, and abandon whoever abandons him. I shall leave and you will meet me again at the Heavenly Pool later. That is a Pool whose width expands from Bosra to Sana'a. There are as many silver goblets in it as there are stars in the sky. Then I shall question you about what you bear witness to today when I meet you at my Pool. I will ask you what you did with the Two Heavy Things and how you dealt with what I left behind when you meet me.' They said, 'O Messenger of God! What are the Two Heavy Things?' The Prophet صلى الله عليه وعلى آله وسلم replied, 'The greater of the Two Heavy Things is the Book of the Honorable the Exalted God. It is a means that is extended from God and I towards you. One side of it is in the Hand of God and the other side is in your hands. The knowledge of the past and what is yet to come up until the arrival of the Hour is in it. And the smaller of the Two Heavy Things is equal to the Quran: It is Ali ibn Abi Talib عليه السلام and his Household. These Two will be inseparable until they come to me at the Heavenly Pool.'"
Ma'ruf ibn Kharabudh said: “I quoted this for Abi Ja’far al-Baqir عليه السلام. Then the Imam said, ‘Abil Tufayl has told the truth. May God have Mercy upon him. I have seen this in Ali’s book and I know it.'"
A similar tradition has been narrated by my father - may God be pleased with him - who quoted that Ali ibn Ibrahim quoted his father, on the authority of Muhammad ibn Abi Umayr. A similar tradition has been narrated by Ja’far ibn Muhammad ibn Masrur - may God be pleased with him - who quoted Al-Hussein ibn Muhammad ibn 'Amir, on the authority of his uncle Abdullah ibn 'Amir, on the authority of Muhammad ibn Abi Umayr. A similar tradition has been narrated by Muhammad ibn Musa ibn al-Mutawakkil - may God be pleased with him - who quoted Ali ibn al-Hussein al-Sa’dabadi, on the authority of Ahmad ibn Aba Abdullah al-Barqi, on the authority of his father, on the authority of Muhammad ibn Abi Umayr, on the authority of Abdullah ibn Sin’an, on the authority of Ma’ruf ibn Kharabudh, on the authority of Abil Tufayl Amir ibn Wathila, on the authority of Hudhaifa ibn Usayd al-Ghaffari. The compiler of the book - may God increase his honor said, “There are many traditions on this issue. I have presented them in the book Al-Ma’rifat fi Fadha'il.