Musnad Ahmad 32:1595

Mu'ammal narrated to us, 'Amarah ibn Zadhan narrated to us, Thabit narrated to us, from Anas ibn Malik, that the angel of rain asked permission of his Lord to come to the Prophet, may Allah bless him and grant him peace, and He gave him permission. He said to Umm Salamah: "Guard the door for us; let no one enter upon us." He said: Al-Husayn came to enter, so she prevented him. He leaped and entered, and began to sit upon the back of the Prophet, may Allah bless him and grant him peace, and upon his shoulder, and upon his upper arm. He said: The angel said to the Prophet, may Allah bless him and grant him peace: "Do you love him?" He said: "Yes." He said: "As for your nation, it will kill him. And if you wish, I will show you the place where he will be killed." He struck with his hand and brought a red clay, and Umm Salamah took it and tied it in her head-covering. Thabit said: "It has reached us that it is Karbala."