ʿUyūn akhbār al-Riḍā
Hadith 306306 - وَبِإِسْنادِهِ عَن الحُسَيْنِ بْنِ عَلِى عَلَيْهِ السَّلامُقالَ: ما كُنَّا نَعرِفُ المُنافِقِينَ عَلَى عَهْدِ رَسُولَ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَآلِهِ إِلاّ بِبُغضِهِم عَلِيّاً وَوُلْدِه عَلَيْهِمُ السَّلاَمُ.
31-306 According to the same documentation, on the authority of Al-Husayn ibn Ali (a.s.), “During the time of God’s Prophet (S) we could not recognize the hypocrites except by their animosity towards Ali (a.s.) and his progeny.”