It is narrated from Sayyiduna Anas (may Allah be pleased with him) that a Jewish boy fell ill, so the Prophet (peace and blessings be upon him) came to visit him. He (peace and blessings be upon him) sat by his head and invited him to Islam. His father said: "Obey Abu al-Qasim (peace and blessings be upon him)." So he accepted Islam. Then he (peace and blessings be upon him) stood up, saying: 'Al-hamdu lillahi alladhi anqadhahu bi min al-nar' (Praise be to Allah who has saved him from the Fire through me).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجنائز / 6597