Sunan al-Nasa'i — The Book of Zakah

“By the One in Whose hand is my soul, if one of you were to take a rope and gather firewood on his back that would be better for him than coming to a man to whom Allah, the Mighty and Sublime, has given of His bounty and asking him (for help). Which he may or may not give.

“They (meaning the people in general) told me that I was proud, while I rode a donkey, wore a cloak, and I milked the sheep. And the Messenger of Allah said to me: “Whoever does these, then there is no pride (arrogance) in him.'”