Public domain
Explanation of the Three Teachings' Guide to the Pen: 2 volumes [2]
From the collection of National Diet Library, Japan. Free to download, adapt and use — no permission needed.
Credit line三教指帰文筆解知鈔 : 2巻 [2]. [寛永年間]. 印融, 1435-1519. National Diet Library, Japan. Public domain.