ʿUyūn akhbār al-Riḍā
Hadith 278278 - وَبِإِسْنادِهِ عَنْ عَلِيِ عَلَيْهِ السَّلامُ قالَ: قالَالنَّبِيُ صَلَّى اللهُ عَلَيْهِ وَآلِهِ: يَقْتُلُ الحُسَيْنَ شَرُّ الاُمَّةِ، وَيَتَبَرَّأُ مِن وُلْدِهِ مَن يَكفُرُ بي.
31-278 According to the same documentation, on the authority of Ali (a.s.), the Prophet (S) said, “The most wicked member of this nation will kill Al-Husayn (a.s.). Whoever denounces Al-Husayn’s (a.s.) progeny has denounced me.”