Although the original provenance of the British Library's Kharosthi scrolls is uncertain, there are strong indications that they came from Hadda in the Jalalabad Plain of eastern Afghanistan, just west of the Khyber Pass. The scrolls were most likely written during the reign of the Saka rulers, in the early first century A.D., making them in all probability the oldest Buddhist texts ever found, as well as the earliest surviving manuscripts in any Indic language. The discovery of the British Library scrolls has brought to light a previously unknown realm of Buddhist literature and scholarship, and revealed that Gandhari was one of the major literary languages of Indian Buddhism.