Musnad Abu Ya'la al-Mawsili 115:186

Abu Musa narrated to us, Muhammad bin Ja'far narrated to us, Shu'bah narrated to us, he said: I heard Qatadah narrating from Anas, that the Prophet (peace and blessings of Allah be upon him) [said] the like of it, except that he said: It was said, "O Messenger of Allah (peace and blessings of Allah be upon him), what is *al-fa'l* (a good omen)?" He said: "The good word."