Muslims celebrate tonight the Prophet Mohammad's (S.A.W) Night Journey and Ascension : Lailat al Isra wa al Mi‘rāj (Arabic).
According to Islamic religion, the Prophet of Islam, Muhammad (SAW) took a physical and spiritual journey during one night -around the year 621.
Muhammad (SAW) is believed to have ascended to heaven from the place marked by The Al-Aqsa Mosque, in Jerusalem.
In the Isra part of the journey, Muhammad (SAW) travelled on the steed Buraq to "the farthest mosque" where he led other prophets in prayer. He then ascended to heaven in the Mi'raj Journey where he spoke to Allah, who gave the Prophet instructions to take back to the Oumma (Community of Fidels).
— Quran, Chapter 17 (Al-Isra) verse 1
Muslims celebrate this event by offering -optional- prayers during this night, gathering in mosques, praying, introspecting and learning.