Mu'jam Kabir Tabarani 5499 — from his father, from his grandfather; he

Khalid bin Sa'id bin al-As narrates from his father, from his grandfather; he said: The tribe of Bakr bin Wa'il came to Makkah, and the Messenger of Allah (peace and blessings be upon him) said: "Go to them and present me to them." So Sayyiduna Abu Bakr (may Allah be pleased with him) went to them and asked: "Who are these people?" They said: "Banu Dhuhl bin Tha'labah." He said: "It is not you I want; you are the tail." At this Daghfal stood up before him and said: "And who are you?" He said: "A man of Quraysh." He asked: "From Banu Hashim?" He said: "No." He asked: "Then from Banu Umayyah?" He said: "No." He said: "Then are you also from the tail?" Then Abu Bakr (may Allah be pleased with him) came to them a second time and asked: "Who are you people?" They said: "Banu Dhuhl bin Shayban." He said: "It is you I want." So he presented (the message) to them. They said: "Wait until such-and-such, our elder, comes." (Khallad said: I think he named al-Muthanna bin Kharijah.) When their elder came, Abu Bakr (may Allah be pleased with him) presented it to them again, and he said: "There is a war between us and the Persians. When we are done with what is between us and them, we will come back and consider what you say." Abu Bakr (may Allah be pleased with him) said: "What do you think: if you overcome them, will you follow us in our matter?" He said: "We do not bind ourselves to this condition for you, but when we are done with what is between us and them, we will come back and consider what you say." Then, when they and the Persians met on the Day of Dhu Qar, their elder said: "What is the name of the man who invited you to what he invited you to?" They said: "Muhammad." He said: "Then let that be your battle cry." So they were granted victory over that people. The Messenger of Allah (peace and blessings be upon him) said: "They were helped because of me."