1687: The Jōkyō 4, 6th Month, Reihō-ji Komusō Set of Rules
鈴法寺掟 - Jōkyō yonen no Reihō-ji okite
"The 1687 Reihō Temple Ordinance"
Dated Jōkyō 4, 6th Month (1687).
Authored and issued by the Reihō Temple
Source: Reprinted in Nakatsuka 1979, pp. 395.
Do note that in this reprint version of the document presented in the Nakatuka Chikuzen 1979 publication, at the very end of the text the document is somewhat obscurely signed Fuke Zen-shū sō hon-ji,
普化禅宗 惣本寺 鈴法寺, "Fuke Zen Sect + all + head temple(s) + Reihō-ji".
Noteworthily though, while religious begging, 'taku-hatsu',
is referred to in par. 7, neither is the shakuhachi itself nor any kínd of "meditation" mentioned in that document at all.
The 1687 Reihō Temple Regulation as reprinted and commented upon
in Nakatsuka 1979, pp. 395-396.