A survey by Matsuda Kazuo, a professor of Buddhism at the Japanese Buddhist University, found that among the Buddhist classics found in Bamiyan site, a world heritage site in central Afghanistan, Yin Robbery Sutra, which is considered to be one of the Mahayana Buddhist classics copied during the 2nd and 3rd centuries, was included. At the beginning of the 20th century, a Mahayana Buddhist classic from 5th to 6th century AD was discovered in Xinjiang, China. This discovery advanced the record by about 300 years and is the oldest copy in the world.
According to Professor Song Tian, the Story of the Fairy Robbery was discovered in the ruins of a cave temple in Bamiyan in the 1990s and kept by a Norwegian collector. There are more than 20 classic fragments copied from coconut leaves, the longest of which is about 10 cm. The scripture uses Gandhara proverbs widely used from North India to Central Asia and is recorded in ancient Indian characters. This time, the age was determined by this passage and classic content.