Sayyiduna Abu Hurairah (may Allah be pleased with him) narrated from the Messenger of Allah (peace and blessings be upon him), he said: "Every prophet has a supplication that is accepted; when he supplicates, his supplication is granted and whatever he asks for is given to him. As for me, I have reserved my supplication for the intercession of my Ummah on the Day of Resurrection."
Hadith Referenceمسند اسحاق بن راهويه / كتاب الدعوات / 822