Musnad Ahmad 20:8

Ishaq ibn Isa and Yahya ibn Ishaq narrated to us, they said: Ibn Lahi'ah narrated to us, from Abu al-Aswad, he said: I heard Ubayd ibn Umm Kilab narrating from Abdullah ibn Ja'far. Yahya ibn Ishaq said: He said: I heard Abdullah ibn Ja'far—one of them said: "the possessor of the two wings"—that the Messenger of Allah, peace and blessings of Allah be upon him, when he sneezed, would praise Allah. It would be said to him: "May Allah have mercy on you (Yarhamuk Allah)." He would say: "May Allah guide you and rectify your state (Yahdeekum Allah wa yuslihu balakum)."