Full Sharh — Mishkat al-Masabih 1870
وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: " إِذَا كَانَ أَوَّلُ لَيْلَةٍ مِنْ شَهْرِ رَمَضَانَ صُفِّدَتِ الشَّيَاطِينُ وَمَرَدَةُ الْجِنِّ وَغُلِّقَتْ أَبْوَابُ النَّارِ فَلم يفتح مِنْهَا بَاب الْجَنَّةِ فَلَمْ يُغْلَقْ مِنْهَا بَابٌ وَيُنَادِي مُنَادٍ: يَا بَاغِيَ الْخَيْرِ أَقْبِلْ وَيَا بَاغِيَ الشَّرِّ أقصر ن وَلِلَّهِ عُتَقَاءُ مِنَ النَّارِ وَذَلِكَ كُلَّ لَيْلَةٍ ". رَوَاهُ التِّرْمِذِيّ وَابْن مَاجَه وَرَوَاهُ أَحْمد عَن رجل وَقَالَ التِّرْمِذِيّ هَذَا حَدِيث غَرِيب
English Translation
Abu Huraira reported God's messenger as saying, "When the first night of Ramadan comes the devils and the rebellious jinn are chained, the gates of hell are locked and not one of them is opened; the gates of paradise are opened and not one of them is locked, and a crier calls, 'You who desire what is good, come forward, and you who desire evil refrain.' Some are freed from hell by God, and that happens every night." Tirmidhi and Ibn Majah transmitted it, and Ahmad transmitted it from a man. Tirmidhi said this is a gharib tradition.
Source
Mishkat al-Masabih(مشكاة المصابيح)
Fasting
Hadith Number
1870