Sayyiduna Jabir bin Abdullah (may Allah be pleased with him) said: I came to the Prophet (peace and blessings be upon him) while he was in the mosque - the narrator thinks it was the forenoon (duha) - and he (peace and blessings be upon him) said to me: "Pray," or he said: "Pray two rak'ahs." I had a debt owed to me by him (peace and blessings be upon him), so he (peace and blessings be upon him) repaid me and gave me something extra as well.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الهبات / 11956