عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: لَمَّا حَضَرَ رَمَضَانَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ: ((قَدْ جَاءَكُمْ رَمَضَانُ، شَهْرٌ مُبَارَكٌ، افْتَرَضَ اللَّهُ عَلَيْكُمْ صِيَامَهُ، تُفْتَحُ فِيهِ أَبْوَابُ الْجَنَّةِ، وَتُغْلَقُ فِيهِ أَبْوَابُ الْجَحِيمِ، وَتُغَلَّقُ فِيهِ الشَّيَاطِينُ، فِيهِ لَيْلَةٌ خَيْرٌ مِنْ أَلْفِ شَهْرٍ، مَنْ حُرِمَ خَيْرَهَا فَقَدْ حُرِمَ))
Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that when the month of Ramadan arrived, the Messenger of Allah (peace and blessings be upon him) said: The month of Ramadan has begun, it is a blessed month, Allah Almighty has made fasting in this month obligatory upon you, in this month the gates of Paradise are opened and all the gates of Hell are closed, and the devils are also chained. In this month there is a night which is better than a thousand months; whoever is deprived of the blessing of this night is truly deprived.