Sunan an-Nasa'i 3221
سنن النسائي#3221SahihNarrated 'Abdullah bin Buraidah:It was narrated from 'Abdullah bin Buraidah that his father said: "Abu Bakr and 'Umar, may Allah be pleased with them, proposed marriage to Fatimah but the Messenger of Allah said: 'She is young.' Then 'Ali proposed marriage to her and he married her to him
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih Isnaad
Al-AlbaniSahih Isnaad
Zubair Ali ZaiIsnaad Sahih
In-book reference: 26:26