Narrated Hudhaifa Al-'Aqib and Saiyid, the rulers of Najrân, came to Allâh's Messenger (ﷺ) with the intention of doing Li'ân, one of them said to the other, "Do not do (this Li'ân) for, by Allâh, if he is a Prophet (ﷺ) and we do this Li'ân, neither we, nor our offspring after us will be successful." Then both of them said (to the Prophet ﷺ), "We will give what you should ask but you should send a trustworthy man with us, and do not send any person with us but an honest one. The Prophet (ﷺ) said, "I will send an honest man who is really trustworthy." Then everyone of the companions of Allâh's Messenger (ﷺ) wished to be that one. Then the Prophet (ﷺ) said, "Get up, O Ubaida bin Al-Jarrah." When he got up, Allâh's Messenger (ﷺ) said, "This is the trustworthy man of this (Muslim) nation. [5:663-O.B]