(3) باب الْوَصِيَّةِ بِالثُّلُثِ
It was narrated from Sa'd that the Prophet visited him when he was sick, and he said:
"O Messenger of Allah, shall I bequeath all of my wealth?" He said: "No." He said: "Half?" He said: "No." He said: "One-third?" He said: "One-third, and one-third is much or large."
Reference: Sunan an-Nasa'i 3632
In-book reference: Book 30, Hadith 22
English translation: Vol. 4, Book 30, Hadith 3662