楞伽經
An important text from this period is the "Two Entrances and Four Practices," found in Dunhuang, and attributed to Bodhidharma. Later sources mention that these figures taught using the "Laṅkāvatāra Sūtra" though there is no direct evidence of this from the earliest sources"." According to John McRae, the earliest Chan sources on these masters show considerable influence from Madhyamaka thought, while the influence from the "Laṅkāvatāra Sūtra" is actually much less pronounced and it is questionable if it was there at all with regards to the earliest figures like Bodhidharma and Huike.