Proselytization..

Narrated Anas:
A young Jewish boy used to serve the Prophet and he became sick. So the Prophet went to visit him. He sat near his head and asked him to embrace Islam. The boy looked at his father, who was sitting there; the latter told him to obey Abul-Qasim and the boy embraced Islam. The Prophet came out saying: "Praises be to Allah Who saved the boy from the Hell-fire."

- Sahih Bukhari (Vol:2, Hadith:438 (Book 23))

*    *    *

Narrated Sa`id bin Al-Musaiyab from his father: When the time of the death of Abu Talib approached, Allah's Apostle went to him and found Abu Jahl bin Hisham and `Abdullah bin Abi Umaiya bin Al-Mughira by his side. Allah's Apostle said to Abu Talib, "O uncle! Say: None has the right to be worshipped but Allah, a sentence with which I shall be a witness (i.e. argue) for you before Allah. Abu Jahl and `Abdullah bin Abi Umaiya said, "O Abu Talib! Are you going to denounce the religion of `Abdul Muttalib?" Allah's Apostle kept on inviting Abu Talib to say it (i.e. 'None has the right to be worshipped but Allah') while they (Abu Jahl and `Abdullah) kept on repeating their statement till Abu Talib said as his last statement that he was on the religion of `Abdul Muttalib and refused to say, 'None has the right to be worshipped but Allah.' (Then Allah's Apostle said, "I will keep on asking Allah's forgiveness for you unless I am forbidden (by Allah) to do so." So Allah revealed (the verse) concerning him (i.e. It is not fitting for the Prophet and those who believe that they should invoke (Allah) for forgiveness for pagans even though they be of kin, after it has become clear to them that they are companions of the fire (9.113).

- Sahih Bukhari (Vol:2, Hadith:442 (Book 23))