Sahih Muslim | Book 1 | Hadith Number 38

Narrated by Abu Huraira
It is narrated on the authority of Abu Huraira that the Messenger of Allah said to his uncle (at the time of his death):Make a profession of it that there is no god but Allah and I will

bear testimony (of your being a Muslim) on the Day of judgment. He (Abu Talib) said: Were it not the fear of the Quraysh blaming me (and) saying that it was the fear of (approaching death) that induced me to do so, I would have certainly delighted your eyes. It was then that Allah revealed:

Verily thou canst not guide to the right path whom thou lovest. And it is Allah Who guideth whom He will and He knoweth best who are the guided (xxviii-56).