وَعَنِ ابْنِ عَبَّاسٍ
أَنَّ رَجُلًا مَاتَ وَلَمْ يَدَعْ وَارِثًا إِلَّا غُلَامًا كَانَ أَعْتَقَهُ فَقَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «هَلْ لَهُ أَحَدٌ؟» قَالُوا: لَا إِلَّا غُلَامٌ لَهُ كَانَ أَعْتَقَهُ فَجَعَلَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مِيرَاثَهُ لَهُ
A man died leaving no heir but a youth whom he had emancipated, and that when the Prophet (sallallahu alayhi wa sallam) asked whether he had any heir and was told that he had none but a youth of his whom he had emancipated, he assigned his estate to him.
Mishkat al-Masabih 2942, Book 13, Inheritance and Wills, Hadith 24. 1 min read