The Messenger of Allah ﷺ said, "Husayn is from me and I am from Husayn. Allah loves whoever loves Husayn. Husayn is one of the grandsons."
حدثنا الحسن بن عرفة حدثنا إسمعيل بن عياش عن عبد الله بن عثمان بن خثيم عن سعيد بن راشد
قال رسول الله ﷺ حسين مني وأنا من حسين أحب الله من أحب حسينا حسين سبط من الأسباط
[Hasan] Ibn Majah narrated it in the Introduction, chapter on the merit of Hasan and Husayn, the two sons of Ali bin Abu Talib , hadith no. 144, from the hadith of Ibn Khuthaym through this same chain. Ibn Hibban graded it sahih, hadith no. 2240, as did Hakim (3/177) and Dhahabi, while Busiri graded it hasan. It has other chains as well.