Narrated Ya'la bin Murrah:

that the Messenger of Allah ﷺ said: "Husain is from me, and I am from Husain. Allah loves whoever loves Husain. Husain is a Sibt among the Asbat." [Asbat, plural of Sibt: A great tribe. Meaning, Al-Husain would have many offspring, such that they would become a great tribe. And this has indeed occurred. See Tuhfat Al-Ahwadhi (4/341).]

حَدَّثَنَا الْحَسَنُ بْنُ عَرَفَةَ، حَدَّثَنَا إِسْمَاعِيلُ بْنُ عَيَّاشٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُثْمَانَ بْنِ خُثَيْمٍ، عَنْ سَعِيدِ بْنِ رَاشِدٍ، عَنْ يَعْلَى بْنِ مُرَّةَ، قَالَ قَالَ رَسُولُ اللَّهِ ﷺ " حُسَيْنٌ مِنِّي وَأَنَا مِنْ حُسَيْنٍ أَحَبَّ اللَّهُ مَنْ أَحَبَّ حُسَيْنًا حُسَيْنٌ سِبْطٌ مِنَ الأَسْبَاطِ " .

قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ وَإِنَّمَا نَعْرِفُهُ مِنْ حَدِيثِ عَبْدِ اللَّهِ بْنِ عُثْمَانَ بْنِ خُثَيْمٍ وَقَدْ رَوَاهُ غَيْرُ وَاحِدٍ عَنْ عَبْدِ اللَّهِ بْنِ عُثْمَانَ بْنِ خُثَيْمٍ .