Sahih al-Bukhari, Volume 8, Book 80, Hadith 729 (USC-MSA) ⓘ
Narrated Ibn `Abbas: The Prophet said, "Give the Fara'id, (the shares prescribed in the Qur'an) to those who are entitled to receive it, and then whatever remains, should be given to the closest male relative of the deceased."
حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ، حَدَّثَنَا وُهَيْبٌ، عَنِ ابْنِ طَاوُسٍ، عَنْ أَبِيهِ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " أَلْحِقُوا الْفَرَائِضَ بِأَهْلِهَا فَمَا بَقِيَ فَلأَوْلَى رَجُلٍ ذَكَرٍ " .
also referenced under: Book 85, Hadith 14 (In-Book) & Hadith 6737 (DarusSalam)