The Kambojas were a southeastern Iranian people who inhabited the northeastern most part of the territory populated by Iranian tribes, which bordered the Indian lands. They only appear in Indo-Aryan inscriptions and literature, being first attested during the later part of the Vedic period.

The Kandahar Bilingual Rock Inscription, also known as the Kandahar Edict of Ashoka and less commonly as the Chehel Zina Edict, is an inscription in the Greek and Aramaic languages that dates back to 260 BCE and was carved by the Mauryan emperor Ashoka at Chehel Zina, a mountainous outcrop near Kandahar, Afghanistan. It is among the earliest-known edicts of Ashoka, having been inscribed around the 8th year of his reign, and precedes all of his other inscriptions, including the Minor Rock Edicts and Barabar Caves in India and the Major Rock Edicts. This early inscription was written exclusively in the Greek and Aramaic languages. It was discovered below a 1-metre (3.3 ft) layer of rubble in 1958 during an excavation project around Kandahar, and is designated as KAI 279.