Musannaf Ibn Abi Shayba 31:50

Ishaq ibn Mansur narrated to us, he said: Asbat ibn Nasr narrated to us, from Asim, from Zirr, who said: "And Hell will be brought on that Day" (Quran 89:23). He said: It will be brought, being led by seventy thousand reins, with every rein being seventy thousand angels.