Musnad Ahmad 30:2000

Abu Ahmad narrated to us, he said: Kathir ibn Zayd narrated to us, from al-Walid ibn Rabah, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "The Messiah, Isa ibn Maryam, is about to descend as a just judge and a fair leader. He will kill the swine, break the cross, and the call will be one." [Abu Hurayrah said]: "So convey to him—or convey to him—the greeting of peace from the Messenger of Allah (peace and blessings of Allah be upon him), and I will tell him, and he will believe me." When death approached him, he said: "Convey to him the greeting of peace from me."