Diibil al-Khuzaai; the famous poet, narrated the following:
One day, in Khurasan, I visited Ali ibn Musa ar-Ridha (a) who asked me to recite some of my new poem. Hence, I went on reciting my poem, which contained the following Verse:
If they –the Ahl ul-Bayt- are oppressed, they extend towards their oppressors hands that are too lofty to oppress others.
When he heard this verse, Imam ar-Ridha (a) wept so heavily that he fainted. A servant who was standing behind the Imam asked me to stop, and I did.
After a while, the Imam (a) asked me to repeat the poem. When I recited the very verse, the Imam (a) wept so heavily that he fainted, and the servant asked me to stop, and I did.
After a while, the Imam (a) asked me to repeat my poem. When I finished, he expressed his admiration by saying, three times, ‘Well done.’
The Imam then ordered to give me ten thousand dirhams on which his name was pressed. I was the first one who would receive such dirhams. Besides, his family members gave me many jewels.
When I arrived in Iraq, I sold these dirhams, each with ten ordinary dirhams, to the Shia. Hence, I could gain one hundred thousand dirhams, which was the first sum I had ever gained. ( al-Ghadir; part 2 page 350-1 )