Alhamdulillah, today is the first day of the sacred month of Rajab.
Allah (swt) in the Holy Quran states, “Indeed, the number of months with Allah is twelve [lunar] months in the register of Allah [from] the day He created the heavens and the earth; of these, four are sacred. That is the correct religion, so do not wrong yourselves during them… (9:36).
The Prophet Muhammad (may Allah bless him and give him peace) gave a speech during his Farewell Pilgrimage and explained that Rajab is one of these 4 sacred months (recorded in Bukhari and Muslim).
Observing voluntary fasting in the sacred months, including Rajab, is recommended. In this regard, Abu Dawud reported on the authority of Mujibah Al-Bahilyyah that the Prophet (pbuh) said to her father or uncle, “Observe fasting for some days in the sacred months and leave fasting for other days.”
Rajab is the month in which the miracle of Al-Isra and Al-Miraj took place, which is the Prophet’s (pbuh) journey from Masjid al-Haraam in Makkah to Masjid Al-Aqsa in Jerusalem–called Al-Isra–and then his (pbuh) journey from Jerusalem to the seven stages of Heaven–called Al-Miraj.