The Messenger of Allah ﷺ said, "A boy was born to me last night, and I named him after my father Ibrahim." Then he handed him over to Umm Sayf, the wife of a blacksmith called Abu Sayf.He set off to visit him, and I followed along. We came upon Abu Sayf as he was blowing on his bellows, the house filled with smoke. I hurried ahead of the Messenger of Allah ﷺ and said, "Abu Sayf, stop. The Messenger of Allah ﷺ has come."So he stopped. The Prophet ﷺ called for the child, embraced him, and said what Allah willed him to say.Anas said, "I saw the boy taking his last breaths in the presence of the Messenger of Allah ﷺ, and the eyes of the Messenger of Allah ﷺ filled with tears. He said, 'The eye sheds tears and the heart grieves, but we say only what pleases our Lord. By Allah, Ibrahim, we are grieved by your loss.'"
قال رسول الله ﷺ: ولد لي الليلة غلام، فسميته باسم أبي إبراهيم ثم دفعته إلى أم سيف، امرأة قين يقال له: أبو سيف، فانطلق يأتيه واتبعته فانتهينا إلى أبي سيف وهو ينفخ بكيره، قد امتلأ البيت دخانا، فأسرعت المشي بين يدي رسول الله ﷺ، فقلت: يا أبا سيف! أمسك، جاء رسول الله ﷺ، فأمسك، فدعا النبي ﷺ بالصبي، فضمه إليه وقال: ما شاء الله أن يقول، فقال أنس: لقد رأيته وهو يكيد بنفسه بين يدي رسول الله ﷺ، فدمعت عينا رسول الله ﷺ، فقال: تدمع العين ويحزن القلب ولا نقول إلا ما يرضى ربنا، والله يا إبراهيم إنا بك لمحزونون.
Bukhari narrated it in the Book of Funerals (1303), and Muslim in the Book of Virtues (62:2315), both through the route of Thabit, from Anas, who said, and then he related it.Bukhari added that when Abdul-Rahman bin Awf saw the tears of the Messenger of Allah ﷺ, he said, "Even you, Messenger of Allah?" So he said, "Ibn Awf, this is mercy."