Chapter 22: The Book on Virtues of Jihad
Narrated Abu Najih As-Sulami: I heard the Messenger of Allah (ﷺ) say: "Whoever shoots an arrow in the cause of Allah, then he has the reward of freeing a slave."[Abu 'Eisa said: ] This Hadith is Hasan Sahih. Abu Najih is 'Amr bin 'Abasah As-Sulami, and 'Abdullah bin Al-Azraq is 'Abdullah bin Zaid.
Jami at-Tirmidhi 1638