Musannaf Ibn Abi Shaybah

Hazrat Umair, who was the slave of Abi Al-Lahm, narrates that I was a slave and I used to give charity. I asked the Holy Prophet (peace and blessings be upon him) whether I could give charity while my master forbids me? The Prophet (peace and blessings be upon him) said: Whatever charity you give, its reward is for both of you.