Nakamura notes that D.T. Suzuki considered the Damo dashi si xing guan 達摩大師四行 [菩提達磨大師略辨大乘入道四行觀 X1217] to be a genuine work of Bodhidharma. However, Ui Hakuju regarded the text as by Huike 慧可, and Sekiguchi argued that it was written after the time of Facong 法聰 (468-559).
[X] X = Xuzang jing. Shinsan dai Nippon zokuzōkyō (卍新纂大日本續藏經). Edited by Kawamura Kōshō 河村孝照; Nishi Giyū 西義雄, and Tamaki Kōshirō 玉城康四郎. Tōkyō : Kokusho Kankōkai, Shōwa 50-Heisei 1 [1975-1989]. Originally published by the Dai Nihon zoku Zōkyō. Kyōto : Zōkyō Shoin, 1905-1912. Version of the Chinese Buddhist Electronic Text Association (CBETA).