Sahih al-Bukhari, Volume 8, Book 80, Hadith 727 (USC-MSA) ⓘ
Narrated Ibn `Abbas: Allah's Messenger said, "Give the Fara'id (shares prescribed in the Qur'an) to those who are entitled to receive it; and whatever remains, should be given to the closest male relative of the deceased.'
حَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا ابْنُ طَاوُسٍ، عَنْ أَبِيهِ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " أَلْحِقُوا الْفَرَائِضَ بِأَهْلِهَا فَمَا بَقِيَ فَهْوَ لأَوْلَى رَجُلٍ ذَكَرٍ " .
also referenced under: Book 85, Hadith 12 (In-Book) & Hadith 6735 (DarusSalam)