Some ignorant people however have themselves specified particular nights of the year, when they stay awake all night and worship Allah. It is believed that anyone who worships Allah in these specific nights, it will recompense for his yearly deeds and will be enough for his salvation and entering Jannah. One among these nights is the night of mid Shabaan (15th Shabaan), which is popularly known as 'Shabb-e-Baraa't', Insha'Allah we'll elaborate further on this issue in a bit.
Ibn Rajab said: “Fasting in Shabaan is better than fasting in the sacred months (i.e. Dhul-Qadah, Dhul-Hijjah, Muharram and Rajab - Surah Tawbah (9):36), and the best of voluntary fasts are those that are (observed in the months) closest to Ramadaan, before or after. The status of these fasts is like that of al-Sunan al-Rawaatib, which are done before and after fard (prayers) and which make up for any shortfall in the number of obligatory prayers. The same applies to fasts observed before and after Ramadaan. Just as al-Sunan al-Rawaatib are better than other kinds of voluntary prayers, so fasts observed (in the months) before and after Ramadaan are better than fasts at other times.” [Lataa'if al-Ma'aarif fimaa li Mawaasim al-'Aam min al-Wazaa'if, by Ibn Rajab al-Hanbali]
When Allah's Messenger (saws) was asked, why he fasted so abundantly in the month of Shabaan, he (saws) said: "(Shabaan) is a month to which people do not pay attention, between Rajab and Ramadaan, and it is a month in which deeds are lifted up to the Lord of the worlds. I like for my deeds to be lifted up when I am fasting.” [an-Nisa'i, see Saheeh al-Targheeb wa'l-Tarheeb, p. 425] This and other Ahaadeeth of Allah's Messenger (saws) encourage performing good deeds when people are likely to become negligent of Allah's remembrance and worship, like remembering Allah in the market place, where people get busy in their dealings and in times of difficulty - Allah's Messenger (saws) said: “Worship at times of tribulation (fitnah) is like Hijrah (migration) to me.” [Saheeh Muslim (2984)] The virtue and superiority of worshiping Allah when people tend to become negligent of Allah's remembrance is because worship at such times is more difficult than worshiping Allah when everybody is engaged in the worship.