Emperor Kōnin
Dispute about this text arose in 8th century in Japan, so Emperor Kōnin sent Master Tokusei () and a group of monks to China, asking whether this book was a forgery or not. A Chinese upasaka or layperson told the head monk of the Japanese monastic delegation, Master Tokusei that this was forged by Fang Yong. Zhu Xi, a 12th-century Neo-confucian who was opposed to Buddhism, believed that it was created during the Tang Dynasty in China, and did not come from India.