It is narrated from Sayyiduna Anas (may Allah be pleased with him) that a Jewish boy used to serve the Prophet (peace and blessings of Allah be upon him). He fell ill, so the Prophet (peace and blessings of Allah be upon him) went to visit him and sat by his head and said: "Accept Islam." Hearing this, the boy looked towards his father who was standing by his head, so he said: "Obey Abul Qasim (peace and blessings of Allah be upon him)." Thus, the boy became Muslim. The Prophet (peace and blessings of Allah be upon him) came out from his place and was saying: "All praise is for Allah who saved him from the Fire."
Hadith Referenceالادب المفرد / كتاب / 524
Hadith Gradingالألبانی:صحيح
Hadith Takhrij«صحيح : أخرجه البخاري ، كتاب الجنائز ، باب إذا أسلم الصبي فمات : 1356 ، 5657 و أبوداؤد : 3095»