Al-Adab Al-Mufrad, Book 20, Hadith 376 (English) ⓘ

Anas ibn Malik said, "The Prophet, may Allah bless him and grant him peace, was the most merciful of people towards members of his family. He had his son (Ibrahim) suckled in part of Madina and the husband of his wet-nurse was a blacksmith. We used to go to him and the house would be full of smoke from the bellows. He would kiss the child and take him in his lap."

حَدَّثَنَا حَرَمِيُّ بْنُ حَفْصٍ، قَالَ‏:‏ حَدَّثَنَا وُهَيْبٌ، قَالَ‏:‏ حَدَّثَنَا أَيُّوبُ، عَنْ عَمْرِو بْنِ سَعِيدٍ، عَنْ أَنَسِ بْنِ مَالِكٍ قَالَ‏:‏ كَانَ النَّبِيُّ صلى الله عليه وسلم أَرْحَمَ النَّاسِ بِالْعِيَالِ، وَكَانَ لَهُ ابْنٌ مُسْتَرْضَعٌ فِي نَاحِيَةِ الْمَدِينَةِ، وَكَانَ ظِئْرُهُ قَيْنًا، وَكُنَّا نَأْتِيهِ، وَقَدْ دَخَنَ الْبَيْتُ بِإِذْخِرٍ، فَيُقَبِّلُهُ وَيَشُمُّهُ‏.‏