"When Ramadan begins, the gates of mercy are opened and the gates of Hall are closed, and the devils are chained up." (Using translation from Nasāʾī 2105)
قَالَ رَسُولُ اللهِ ﷺ «إِذَا دَخَلَ رَمَضَانُ فُتِّحَتْ أَبْوَابُ الرَّحْمَةِ وَغُلِّقَتْ أَبْوَابُ جَهَنَّمَ وَسُلْسِلَتِ الشَّيَاطِينُ»