وَحَدَّثَنَا نَصْرُ بْنُ عَلِيٍّ الْجَهْضَمِيُّ، حَدَّثَنِي أَبِي، حَدَّثَنَا لَيْثُ بْنُ سَعْدٍ، بِهَذَا الإِسْنَادِ ‏.‏ بِمِثْلِهِ غَيْرَ أَنَّهُ قَالَ ‏"‏ فَإِنَّ فِي السَّنَةِ يَوْمًا يَنْزِلُ فِيهِ وَبَاءٌ ‏"‏ ‏.‏ وَزَادَ فِي آخِرِ الْحَدِيثِ قَالَ اللَّيْثُ فَالأَعَاجِمُ عِنْدَنَا يَتَّقُونَ ذَلِكَ فِي كَانُونَ الأَوَّلِ ‏.‏

This hadith is reported on the authority of Laith b. Sa'd with the same chain of transmitters, but with a slight variation in wording (and that is that) he (the Holy Prophet) said: There is a day in a year when descends the pestilence; at the end of the hadith Laith said that the non Arabs save themselves from it in Kanun Awwal (this is the month of December). Translation Not Available

Book Ref: Sahih Muslim Book 36 Hadith 5001
Web Ref:  Sahih Muslim Book 23 Hadith 2014 b