Whoever Loves Hasan and Husayn has indeed Loved me, and Whoever hates them has indeed hated me.
Ibn Majah in Sunan, V.1 p.51#143.
O Allah! I Love them [Hasan… and Husayn], you also Love them and love those who Love Them.
Tirmidhi, V.5 p,657 #3772.
The Messenger of Allah (salla Llahu ‘alayhi wa sallam) said,
Husayn is from me and I am from Husayn; Allah loves those who love Husayn.
– Recorded by Imam Bukhari (al-Adab al-Mufrad), al-Tirmidhi (Sunan) and Imam Ahmad (Musnad).
This hadith is displayed next to the entrance of Masjid Sayyidina Husayn (radi Allahu anhu) in Cairo, Egypt