Ibn Hanbal says: Muhammad bin ‘Ubayd has related to us from Sharhabīl bin Madrak from ‘Abdullāh bin Muhammad bin ‘Ubayd has related to us from Sharhabīl bin Madrak from ‘Abdullāh bin Nujayy from his father who narrates that he was marching with (Imam) ‘Alī [(‘a)] towards Siffīn and when we reached Ninevah,

(Imam) ‘Alī [(‘a)] cried in a loud voice:

“O Abā ‘Abdillāh! Be patient. O Abā ‘Abdillāh! Be patient beside the River Euphrates.”

I asked him: “For what?”

He said: “Once when I went to the Prophet I saw tears in his eyes and asked him: O Messenger of Allah (S) who has made you upset? Why are your eyes moist with tears?

He said: “A while ago [the Archangel] Gabriel left. He has informed me that indeed (Imam) Hussain (as) will be killed beside the River Euphrates.”

Then he [the Prophet] said:
“Do you like to smell part of his soil [where Imam Hussain (as) will be killed]?”

I said: “Yes!

He stretched his hand and taking a fistful of the soil gave it to me. As a result, tears started rolling down uncontrollably from my eyes.

Source: Ibn Hunbal’s Musnad, hadith no. 6480 (Ahmad Shākir)

Note: The annotator of the Musnad regards the isnād of this hadith as sahīh and writes that Nujayy is not the only one to narrate this from Imam ‘Alī (‘a).

Allahumma Laan Qatalatal Hussain (as), wa Awladehi, wa Ashabehi. Allahumma Laan hum jamia!