We are now in the month of Rajjab. It is the seventh month in the Islamic lunar calendar. This month was regarded as one of the sacred months (Al-Ashhur-al-hurum) in which battles were prohibited in the days of the Holy Prophet 
. It is also a prelude to the month of Ramadan, because Ramadan follows it after the intervening month of Sha'ban. Therefore, when the Holy Prophet sighted the moon of Rajjab, he used to pray to Allah in the following words:
"O Allah, make the months of Rajjab and Sha'ban blessed for us, and let us reach the month of Ramadan (i.e. prolong our life up to Ramadan, so that we may benefit from its merits and blessings)."
Lailatul Mi'raj
Night Journey, Isra and Mi'raj (Arabic: الإسراء والمعراج, al-’Isrā’ wal-Mi‘rāğ), are the two parts of a journey that Prophet Muhammad took in one night, around the year 621. It is generally believed that the great event of Mi'raj (ascension of the Holy Prophet to the heavens) took place in the night of 27th of Rajjab. Therefore, some people celebrate the night as "Lailatul- Mi'raj" (the night of ascension to heavens).
Indeed, the event of mi'raj was one of the most remarkable episodes in the life of our beloved Holy Prophet . He was called by Almighty Allah. He traveled from Makkah to Baitul-Maqdis and from there he ascended the heavens through the miraculous power of Allah. He was honored with a direct contact with his Creator at a place where even the angels had no access. This was the unique honor conferred by Allah to the Holy Prophet alone. It was the climax of the spiritual progress which is not attained by anybody except him. No doubt the night in which he was blessed with this unparalleled honor was one of the greatest nights in the history of this world.
1. `Uthman ibn Hakim al-Ansari said: "I asked Sa`eed ibn Jubayr about fasting in Rajjab, and we were then passing through the month of Rajjab, whereupon he said: "I heard Ibn `Abbas saying: "The Messenger of Allah 
used to observe fast so continuously that we thought he would not break it, and did not observe it so continuously that we thought he would not observe fast." Muslim and Abu Dawud relate it in Kitab al-sawm, respectively in the chapter on fasting at times other than Ramadan, and in the chapter of fasting during Rajjab.
Imam Nawawi says: "It would appear that the meaning inferred by Sa`eed ibn Jubayr from Ibn `Abbas's report is that fasting in Rajjab is is neither forbidden nor considered praiseworthy in itself, rather, the ruling concerning it is the same as the rest of the months. Neither prohibition not praiseworthiness has been established for the month of Rajjab in itself, however, the principle concerning fasting is that it is praiseworthy in itself, and in the Sunan of Abu Dawud(*) the Prophet has made the fasting of the sacred months praiseworthy, and Rajjab is one of them. And Allah knows best." Sharh Sahih Muslim Kitab 13 Bab 34 #179.
(*) Kitab al-siyam, Chapter: "Fasting During the Sacred Months". Also in Ibn Majah and Ahmad, hadith of the man who repeats: "I can bear more," and to whom the Prophet finally says: "Fast during the sacred months."
It is established that Ibn `Umar fasted during the sacred months: Musannaf `Abd al-Razzaq 4:293, Musannaf Ibn Abi Shayba 1:125.
