“Two months do not fall short: the two months of Eid—Ramadan and Dhu al-Hijjah.”

Narrated by al-Bukhari (no. 1912), with his wording being his, and by Muslim (no. 1089), from the ḥadīth of Abu Bakrah (may Allah be pleased with him).

Brief Explanation of the Hadith

It is from the gracious bounty of Allah, Exalted is He, upon this Ummah that He has multiplied its rewards, perfected for it its recompense, and increased it from His grace, by making certain times great seasons of obedience, in which good deeds are multiplied and sins are erased.
On the authority of Abū Bakrah Nufayʿ ibn al-Ḥārith (may Allah be pleased with him), that the Prophet (may Allah’s peace and blessings be upon him) said: “Two months do not fall short,” meaning that their reward and recompense do not diminish even if the number of days in either of them is less; rather, they are complete with respect to virtue.
It has also been said that they do not both diminish (consist of twenty-nine days) together in a single year in most cases, and other explanations have been mentioned; however, the first interpretation is the most apparent and the strongest.
As for his statement, “the two months of Eīd: Ramaḍān and Dhū al-Ḥijjah,” Dhū al-Ḥijjah is manifestly a month of Eīd, while Ramaḍān is so described because Eīd al-Fiṭr follows it immediately; due to its close connection, it is ascribed to it.
The Prophet (may Allah’s peace and blessings be upon him) singled out these two months because they are uniquely associated with the rulings of fasting, the Eīds, and ḥajj.
In the ḥadīth there is an indication of the immense virtue and lofty status of the two months of Ramaḍān and Dhū al-Ḥijjah, and an exhortation for the Muslim to strive diligently in worship during them, so as to attain great reward and abundant grace.