Abu Huraira reported Messenger of Allah ﷺ as saying: When it is the month of Ramadan, the gates of mercy are opened, and the gates of Hell are locked and the devils are chained.
قَالَ رَسُولُ اللَّهِ ﷺ إِذَا كَانَ رَمَضَانُ فُتِّحَتْ أَبْوَابُ الرَّحْمَةِ وَغُلِّقَتْ أَبْوَابُ جَهَنَّمَ وَسُلْسِلَتِ الشَّيَاطِينُ