Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) said: A man entered the mosque after the Messenger of Allah (peace and blessings be upon him) had finished leading the prayer. He (peace and blessings be upon him) said: "Will anyone give charity to this man by praying with him?"
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5012