Sunan Ibn Majah 1648
سنن ابن ماجه#1648SahihIt was narrated that Umm Salamah said:“The Messenger of Allah (ﷺ) used to join Sha’ban to Ramadan.”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih
In-book reference: 7:11