Hazrat Ubaid bin Jubair narrates that I boarded a boat with the companion of the Messenger of Allah (peace be upon him), Sayyiduna Abu Basrah Ghifari (may Allah be pleased with him), from the city of Fustat during Ramadan. Sayyiduna Abu Basrah (may Allah be pleased with him) said, "Are you turning away from the Sunnah of the Messenger of Allah (peace be upon him)?" Imam Abu Bakr (may Allah have mercy on him) says, "I do not know Kulaib bin Dehl and Ubaid bin Jubair, and I do not accept the religion (narrations) of a person whose integrity and trustworthiness I do not know, provided that the narration is established."