Praise be to Allaah,
The Lord of the Worlds, and peace and blessings be upon our Prophet Muhammad, the Seal of the Prophets and Chief of the Messengers, and upon all his family and companions.
Allah’s sacred month of Muharram is a blessed and important month. It is the first month of the Hijri calendar and is one of the four sacred months concerning which Allaah says (interpretation of the meaning):
“Verily, the number of months with Allaah is twelve months (in a year), so it was ordained by Allaah on the Day when He created the heavens and the earth; of them, four are sacred. That is the right religion, so wrong not yourselves therein…” [al-Tawbah 9:36]
Abu Bakrah (may Allaah be pleased with him) reported that the Prophet (peace and blessings of Allaah be upon him) said: “The year is twelve months of which four are sacred, the three consecutive months of Dhu’l-Qa’dah, Dhu’l-Hijjah and Muharram, and Rajab Mudar which comes between Jumaada and Sha’baan.” (Reported by al-Bukhaari, 2958).
Muharram is so called because it is a sacred (muharram) month and to confirm its sanctity.
Allaah’s words (interpretation of the meaning): “so wrong not yourselves therein…” mean do not wrong yourselves in these sacred months, because sin in these months is worse than in other months.
It was reported that Ibn ‘Abbaas said that this phrase (so wrong not yourselves therein…) referred to all the months, then these four were singled out and made sacred, so that sin in these months is more serious and good deeds bring a greater reward.
Qutaadah said concerning this phrase (so wrong not yourselves therein…) that wrongdoing during the sacred months is more serious and more sinful that wrongdoing at any other time. Wrongdoing at any time is a serious matter, but Allaah gives more weight to whichever of His commands He will. Allaah has chosen certain ones of His creation. He has chosen from among the angels Messengers and from among mankind Messengers. He chose from among speech the remembrance of Him (dhikr). He chose from among the earth the mosques, from among the months Ramadaan and the sacred months, from among the days Friday and from among the nights Laylat al-Qadr, so venerate that which Allaah has told us to venerate. People of understanding and wisdom venerate the things that Allaah has told us to venerate. (Summarized from the Tafseer of Ibn Katheer, may Allaah have mercy on him. Tafseer of Surat al-Tawbah, aayah 36).
The Virtue of observing more naafil fasts during Muharram.
Abu Hurayrah (may Allaah be pleased with him) said: “The Messenger of Allaah (peace and blessings of Allaah be upon him) said: ‘The best of fasting after Ramadaan is fasting Allaah’s month of Muharram.’” (reported by Muslim, 1982).
The phrase “Allaah’s month”, connecting the name of the month to the name of Allaah in a genitive grammatical structure, signifies the importance of the month. Al-Qaari said: “The apparent meaning is all of the month of Muharram.” But it was proven that the Prophet (peace and blessings of Allaah be upon him) never fasted any whole month apart from Ramadan, so this hadeeth is probably meant to encourage increasing one’s fasting during Muharram, without meaning that one should fast for the entire month.
It was reported that the Prophet (peace and blessings of Allaah be upon him) used to fast more in Sha’baan. It is likely that the virtue of Muharram was not revealed to him until the end of his life, before he was able to fast during this month. (Sharh al-Nawawi ‘ala Saheeh Muslim).
Allaah chooses whatever times and places He wills
Al-‘Izz ibn ‘Abd al-Salaam (may Allaah have mercy on him) said: “Times and places may be given preferred status in two ways, either temporal or religious/spiritual. With regard to the latter, this is because Allaah bestows His generosity on His slaves at those times or in those places, by giving a greater reward for deeds done, such as giving a greater reward for fasting in Ramadaan than for fasting at all other times, and also on the day of ‘Aashooraa’, the virtue of which is due to Allaah’s generosity and kindness towards His slaves on that day…” (Qawaa’id al-Ahkaam, 1/38). Islambradford.com