Sayyiduna Jabir (may Allah be pleased with them both) narrates that a man from among the Muslims was standing on a rock in Makkah, praying. The Prophet (peace and blessings be upon him) passed by him, and the Prophet (peace and blessings be upon him) said: "Indeed, Allah Almighty does not grow weary (of rewarding) until you grow weary (of doing deeds)."
Hadith Referenceالمعجم الأوسط / باب العين / 3729
Hadith Takhrij«أخرجه ابن حبان فى «صحيحه» برقم: 357، وابن ماجه فى «سننه» برقم: 4241، وأبو يعلى فى «مسنده» برقم: 1796، 1797»