Hadith 31-304

وَبِإِسْنادِهِ عَنْ عَلِيِ‏ عَلَيْهِ السَّلامُ قالَ: قالَ النَّبِيُ‏ صَلَّى اللهُ عَلَيْهِ وَآلِهِ: إِذا مِتُّ ظَهَرَت لَكَ ضَغائِنُ فِي صُدُورِ قَومٍ يَتَمالَئُونَ عَلَيْكَ حَقَّكَ.

According to the same documentation on the authority of Ali (a.s.), the Prophet (S) said, “(O Ali!) Once I die, the animosities hidden in the hearts of some people will show up and they will unite together against you and prevent you from getting what is rightfully yours.”