Musannaf Ibn Abi Shayba 33:366

Jarir ibn Abd al-Hamid narrated to us, from Mansur, from Abu Wa'il, from Abu al-Darda', who said: "Indeed, I command you to do a matter while I do not do it myself, but I hope for the reward in it. And the most hateful of people to me, that I should wrong him, is the one who has no helper against me except Allah."