A deeply religious man, as the story of his visit to the emperor shows, Bodhidharma is hardly likely to have written the book attributed to him, which contains descriptions of bedroom as well as kungfu techniques.
依民國初年中央國術館編審處長唐豪的考證，李靖序中稱：達摩在魏孝明帝太和年間（也就是梁武帝時）到了嵩山，但孝明帝根本沒有用過「太和」當年號；而且易筋經中談到「採補」之術，幾乎是一本淫書，達摩是個苦行僧，怎可能有如此著作？