Sunan Ibn Majah 1659
سنن ابن ماجه#1659SahihIt was narrated that from ‘Abdur-Rahman bin Abu Bakrah, from his father, that the Prophet (ﷺ) said:“Two months of ‘Eid whose reward cannot be reduced (even if they are twenty-nine days): ‘Ramadan and Dhul-Hijjah.”
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 Bukhari
In-book reference: 7:22