وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ عَمِّهِ أَبِي سُهَيْلِ بْنِ مَالِكٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّهُ قَالَ إِذَا دَخَلَ رَمَضَانُ فُتِّحَتْ أَبْوَابُ الْجَنَّةِ وَغُلِّقَتْ أَبْوَابُ النَّارِ وَصُفِّدَتِ الشَّيَاطِينُ ‏.‏

Yahya related to me from Malik from his paternal uncle Abu Suhaylibn Malik from his father that Abu Hurayra said, "When Ramadan comesthe gates of the Garden are opened and the gates of the Fire arelocked, and the shayatin are chained." Translation Not Available

Book Ref: Muwatta Imam Malik Book 18 Hadith 692
Web Ref:  Muwatta Imam Malik Book 18 Hadith 59