The ancient Arabs were renowned for their maritime trade journeys, which enabled interactions with other nations. They even explored the eastern part of the world, recognizing two neighboring regions: al-Hind and al-Ṣīn. It is a common misconception to deem both as similarly modern-day India and China, thus not realizing that the Malay Peninsula and Kanto respectively had their presence in the concerns of the Arab seafarers. To unveil the fact, this study employs a qualitative method through a document analysis upon al-Masālik wa al-Mamālik authored by Ibn Khurdādhbih (d. 885 AD). This geography book was achieved under the Abbasid Empire’s command to compile information about known lands on earth within one book. In his mission, Ibn Khurdādhbih referred to the historical archives of the empire collected from travelers. Based on the analysis, this study proves that al-Hind for the ancient Arabs encompassed south and southeast Asia, while al-Ṣīn was a vast region stretching from the modern-day Hanoi to the far east, and its inland is neighboring Tibet and states of the Turks. The book mentions Kalah (Ancient Kedah) and Jazīrat Tiyūma (Tioman Island) of the Malay Peninsula as parts of al-Hind, whereas Qānṭū (Kanto) as a part of al-Ṣīn. The wisdom of Arabian travellers regarding exploration and appreciation of foreign lands, lays in natural wealth. In tandem, the book introduces Ancient Kedah as rich with bamboo trees and tin, while Tioman Island produced agarwood and camphor. Kanto was known for its rich agricultural harvest. This study recommends further research on Arabic geography texts of antiquity to accentuate the wisdom on the nature and heritage of ancient civilizations.