Musannaf Ibn Abi Shayba 3:4721

Hushaym narrated to us, he said: Sulayman al-Taymi informed us, from Abu Uthman, who said: A man entered the mosque while the Prophet (peace be upon him) had already prayed. He (the Prophet) said: "Is there no man who will give charity to this one, so he stands and prays with him?"