Bactrian language
The Rabatak inscription is an inscription written on a rock in the Bactrian language and the Greek script, which was found in 1993 at the site of Rabatak, near Surkh Kotal in Afghanistan. The inscription relates to the rule of the Kushan emperor Kanishka, and gives remarkable clues on the genealogy of the Kushan dynasty. It dates to the 2nd century CE.