Musnad Ahmad 929:4

Muhammad ibn Ja‘far narrated to us, Shu‘bah narrated to us, from ‘Asim, who said: I heard Abu ‘Uthman narrating from Ubayy ibn Ka‘b, who said: There was a man who used to come to the prayer, and it was said to him: "If only you would acquire a donkey to protect you from the burning sand, the thorns, and the rugged ground." Shu‘bah said: And he mentioned a fourth thing, he said: "The rugged path." He said: "I would not like my tent-rope to be next to the tent-rope of the Messenger of Allah (ﷺ)." This was mentioned to the Prophet (ﷺ), and he said: "You shall have what you intended," or he said: "You shall have the reward of what you intended." Shu‘bah said this.