Narrated Anas (May Allah be pleased with him) reported:

A young Jewish boy used to serve the Prophet ﷺ and he became sick. So the Prophet ﷺ 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 Abu-l-Qasim (i.e., the Messenger of Allah ﷺ) and the boy embraced Islam. The Prophet ﷺ came out saying: "Praises be to Allah Who saved the boy from the Hell-fire."

حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ، حَدَّثَنَا حَمَّادٌ ـ وَهْوَ ابْنُ زَيْدٍ ـ عَنْ ثَابِتٍ، عَنْ أَنَسٍ رضى الله عنه ـ قَالَ كَانَ غُلاَمٌ يَهُودِيٌّ يَخْدُمُ النَّبِيَّ ﷺ فَمَرِضَ، فَأَتَاهُ النَّبِيُّ ﷺ يَعُودُهُ، فَقَعَدَ عِنْدَ رَأْسِهِ فَقَالَ لَهُ " أَسْلِمْ ". فَنَظَرَ إِلَى أَبِيهِ وَهْوَ عِنْدَهُ فَقَالَ لَهُ أَطِعْ أَبَا الْقَاسِمِ ﷺ. فَأَسْلَمَ، فَخَرَجَ النَّبِيُّ ﷺ وَهْوَ يَقُولُ " الْحَمْدُ لِلَّهِ الَّذِي أَنْقَذَهُ مِنَ النَّارِ "