Musnad Ahmad 534:20

Haywah ibn Shurayh narrated to us, Baqiyyah narrated to us, Buhayr ibn Sa’d narrated to me, from Khalid ibn Ma’dan, from Ibn Abi Bilal, from Abdullah ibn Busr, that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Between the great battle (al-malhamah) and the conquest of the city are six years, and the False Messiah (al-Masih al-Dajjal) will emerge in the seventh." Al-Hakam ibn Musa narrated to us—Abdullah said: And I heard it from Al-Hakam—Isma’il, meaning Ibn ‘Ayyash, narrated to us, he said: Muhammad ibn Abd al-Rahman al-Himyari narrated to us, from Abdullah ibn Busr al-Mazini, a companion of the Messenger of Allah (peace and blessings of Allah be upon him), who said: "When the Messenger of Allah (peace and blessings of Allah be upon him) would come to the house of a people, he would approach it from the side of its wall, and he would not approach it facing its door."