Anas said:
When `Ubaidallah b. Ziyad[*]was brought al-Husain's bead and it was put in a dish, he began to tap [it] and said something about his beauty, so I said, "I swear by God that he was the one of then who most closely resembled God's messenger." He was dyed with indigo.
*The governor of Basra who was sent to Kufa to deal with Hussain's movement which ended with his death at Karbala.
Bukhari transmitted it.
In Tirmidhi's version he said: I was with Ibn Ziyad when al-Husain's head was brought in, and he began to tap on his nose with a wand and say, "I have never seen anyone as good looking as this man." I said, "I assure you that he was one of those who resembled God's messenger most closely."
Tirmidhi said this is a sahih hasan gharib tradition.