The Book of Characteristics · Hadith 851 (#Ḥadīth #1)

7-41 حدثنا أبي رضي الله عنه قال: حدثنا سعد بن عبد الله، عن أحمد بن محمد ابن عيسى، عن أبي يحيى الواسطي باسناده رفعه إلى الصادق عليه السلام قال: الدنيا سبعة أقاليم: يأجوج ومأجوج الروم والصين والزنج وقوم موسى وأقاليم بابل

7-41 (The compiler of the book narrated) that his father - may God be pleased with him - narrated that Sa’ed ibn Abdullah quoted Ahmad ibn Muhammad ibn Isa, on the authority of Abi Yahya al-Vaseti who linked it up through a chain of narrators to As-Sadiq (MGB), “The world is divided into seven territories: Yajooj; Majooj; Rome; China; Blacks; the tribe of Moses; and the Babel’s territories.”

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).