Hazrat Abu Wa'il (may Allah have mercy on him) narrates that a delegation from the tribe of Banu Asad came to the service of the Messenger of Allah (peace and blessings be upon him). The Prophet (peace and blessings be upon him) asked them: "Who are you people?" They replied: "We belong to the tribe of Banu Zaniyyah." Upon this, he (may Allah be pleased with him) said: "You are Banu Rushdah." (Because the word Zaniyyah could lead the mind towards adultery, he gave them the title Banu Rushdah.)