Hadith on Ramadan: Ramadan is a blessed month of mercy, salvation and the Night of Decree

Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said when the month of Ramadan arrived, “The month of Ramadan has come, a blessed month in which Allah the Exalted has obligated you to fast. In it the gates of the heavens are opened, and in it the gates of Hellfire are closed, and in it the devils are chained, and in it is a night that is better than a thousand months. Thus, whoever is deprived of its good is truly deprived.

Source: Musnad Aḥmad 7108

Grade: Sahih (authentic) according to Ahmad Shakir

عَنْ أَبِي هُرَيْرَةَ قَالَ لَمَّا حَضَرَ رَمَضَانُ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَدْ جَاءَكُمْ رَمَضَانُ شَهْرٌ مُبَارَكٌ افْتَرَضَ اللَّهُ عَلَيْكُمْ صِيَامَهُ تُفْتَحُ فِيهِ أَبْوَابُ الْجَنَّةِ وَيُغْلَقُ فِيهِ أَبْوَابُ الْجَحِيمِ وَتُغَلُّ فِيهِ الشَّيَاطِينُ فِيهِ لَيْلَةٌ خَيْرٌ مِنْ أَلْفِ شَهْرٍ مَنْ حُرِمَ خَيْرَهَا قَدْ حُرِمَ

7108 مسند أحمد باقي مسند المكثرين

12/134 المحدث أحمد شاكر خلاصة حكم المحدث إسناده صحيح في مسند أحمد