I swear by Allah, I do not know whether my companions have forgotten or have pretended to forgot. I swear by Allah that the Messenger of Allah ﷺ did not omit a leader of a wrong belief (fitnah)--up to the end of the world--whose followers reach the number of three hundred and upwards but he mentioned to us his name, his father's name and the name of his tribe.
حُذَيْفَةُ بْنُ الْيَمَانِ وَاللَّهِ مَا أَدْرِي أَنَسِيَ أَصْحَابِي أَمْ تَنَاسَوْا وَاللَّهِ مَا تَرَكَ رَسُولُ اللَّهِ ﷺ مِنْ قَائِدِ فِتْنَةٍ إِلَى أَنْ تَنْقَضِيَ الدُّنْيَا يَبْلُغُ مَنْ مَعَهُ ثَلاَثَمِائَةٍ فَصَاعِدًا إِلاَّ قَدْ سَمَّاهُ لَنَا بِاسْمِهِ وَاسْمِ أَبِيهِ وَاسْمِ قَبِيلَتِهِ