Sahih Muslim 2923
Sahih Muslim · Book 54: The Book of Tribulations and Portents of the Last Hour · The Hour Will Not Begin Until A Man Passes By Another Man's Grave And Wishes That He Was In The Place Of The Deceased, Because Of Calamity
This hadith has been narrated on the authority of Simak with the same chain of transmitters. and Simak said:
وَحَدَّثَنِي ابْنُ الْمُثَنَّى ، وَابْنُ، بَشَّارٍ قَالاَ حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ ، حَدَّثَنَا شُعْبَةُ ، عَنْ سِمَاكٍ ، بِهَذَا الإِسْنَادِ مِثْلَهُ . قَالَ سِمَاكٌ وَسَمِعْتُ أَخِي ، يَقُولُ قَالَ جَابِرٌ فَاحْذَرُوهُمْ .
I heard my brother say that jabir had stated: Be on your guard against them.