Musannaf Ibn Abi Shayba 33:391

Shababa ibn Sawwar narrated to us, he said: Jarir ibn Abd al-Rahman ibn Abi Awf narrated to us, from Abd al-Rahman ibn Mas'ud al-Fazari, from Abu al-Darda', who said: There is no man who goes out early to the mosque for goodness that he learns or teaches, except that there is written for him the reward of a mujahid who does not return except with spoils.