Sahih Muslim Book 31, Hadith Number 5936.
Chapter : Merits of Sa’d b. Abi Waqqis (Allah be pleased with him).
Sa’d reported: We were six men in the company of Allah’s Messenger (,nay peace be upon him) that the polytheists said to Allah’s Apostle (may peace be upon him): Drive them away so that they may not be overbold upon us. He said: I, Ibn Mas’ud and a person from the tribe of Hudhail, Bilal and two other persons, whose names I do not know (were amongst such persons). And there occurred to Allah’s Messenger (may peace be upon him) what. Allah wished and he talked with himself that Allah, the Exalted and Glorious, revealed: “Do not drive away those who call their Lord morning and evening desiring to seek His pleasure.”