It 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.”
Hadith No. 1659
Sunan Ibn Majah
Gradings:
Al-Albani:
Sahih
Muhammad Fouad Abd al-Baqi:
Sahih
Shuaib Al Arnaut:
Sahih
Zubair Ali Zai:
Sahih Bukhari