Having traversed the eastern realms of the world, Sikandar turned his ambition toward the West, intent upon exploring the farthest horizons of the earth. Along his journey, he came upon a pristine and prosperous city whose purity seemed untouched by the harsh winds of ruin. As the thunderous roar of the royal war-drums echoed from the backs of elephants, the elders and noblemen of the city traveled two leagues to welcome the conqueror. Sikandar received them with high honors and inquired if any marvels or great afflictions existed in their domain.
With bitter tears and heavy hearts, the elders unlocked their grief, revealing a terrifying plague that cursed their existence. Beyond the towering mountain whose crest pierced the clouds dwelt the monstrous hordes of Yajuj and Majuj. They described these creatures with dread: monstrous beings with elephantine ears—one served as their mattress and the other as their blanket—black tongues, eyes suffused with blood, wild boar-like tusks, and bodies covered in thick, dark hair. Multiplying in infinite numbers, they swept across the lands like wild beasts during spring, devouring everything in their path. The people begged the triumphant king to devise a remedy and build a defensive barrier to save them from annihilation.
Moved by their distress, Sikandar resolved to aid them through divine grace and royal bounty. He offered his vast treasures, asking only for local materials and labor. Assembling the greatest philosophers, architects, and master blacksmiths from across the empire, he commanded the construction of a titanic wall between two high mountain peaks. The craftsmen layered iron, copper, sulfur, naphtha, and oil, building an immense structure. Hundreds of thousands of blacksmiths operated massive bellows, stoking roaring flames until the minerals melted together into a seamless, unbreakable barrier. Thus, the terrifying menace of Yajuj and Majuj was sealed away forever, bringing peace to the world while Sikandar refused all material reward from the grateful populace.