Sunan an-Nasa'i 2353

سنن النسائي#2353Sahih

It was narrated from Umm Salamah:That the Prophet would not fast any month of the year in full except Shaban and he used to join it to Ramadan

Scholarly Authentication

We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:

Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiHasan

In-book reference: 22:264