Musnad Abu Ya'la al-Mawsili 6:19

Abu Hisham al-Rifa'i narrated to us, Abu Khalid al-Ahmar narrated to us, Kathir bin Zayd narrated to us, from al-Muttalib bin Abdullah bin Hantab, from Mus'ab bin Sa'd, from Sa'd, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Whoever supplicates with the supplication of Yunus, it will be answered for him."