وَعَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «ابْنُ أُخْتِ الْقَوْمِ مِنْهُم»
He reported God’s Messenger as saying, “A sister’s son has blood- relationship to her family.”
Mishkat al-Masabih 2923, Book 13, Inheritance and Wills, Hadith 5. 1 min read