佛祖統紀 54.107

54.107

北魏孝昭。道士姜斌引開天經說。老子西入化胡。以佛為侍者。沙門曇謨最言。佛生昭王時。後三百四十五年。定王時老子始生。太尉蕭綜劾奏。開天偽經。罪當惑眾詔流斌馬邑。

Under Emperor Xiaozhao of the Northern Wei, the Daoist Jiang Bin cited the Kaitian Jing to state that Laozi went west to convert the barbarians and took the Buddha as his attendant. Śramaṇa Tanmozui said: "The Buddha was born during the time of King Zhao; 345 years later, during the time of King Ding, Laozi was first born." Grand Defender Xiao Zong impeached [him], presenting that the Kaitian was an apocryphal sūtra whose crime deserved [punishment for] deluding the multitude; an edict banished Bin to Mayi.