(9) باب ذِكْرِ الاِخْتِلاَفِ عَلَى سُفْيَانَ
It was narrated that Al-Harith bin Miskin said, it being read to him while I was listening:
"From Sufyan, from Az-Zuhri, from 'Ubaidullah bin 'Abdullah, from Ibn 'Abbas, that Sa'd bin 'Ubadah consulted the Prophet about a vow which his mother had to fulfill, but she died before doing so. The Messenger of Allah said: 'Fulfill it on her behalf.'"
Reference: Sunan an-Nasa'i 3660
In-book reference: Book 30, Hadith 50
English translation: Vol. 4, Book 30, Hadith 3690