SB 8.13.7
sanksepato mayoktani
sapta-manvantarani te
bhavisyany atha vaksyami
visnoh saktyanvitani ca
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
I have briefly explained to you the position of the seven Manus. Now I shall describe the future Manus, along with the incarnations of Lord Visnu.