悟真篇
其三十八

其三十八

其三十八

山人天地盈虛自有時,審能消息始知機。由來庚申明令,殺盡三尸道可期。天地閒只是一氣,春生夏長,秋歛冬藏,盈而復虛,虛而復盈,自有其時。而息則盈,消則虛,消息者又爲盈虛之機。金丹採藥,全在此氣。氣之盈虛,如蹴陶然,氣實則壯,氣散則餒,亦猶天地盈虛之有時,全要人審察其消息之機而能用之。而消息之機,惟要申明庚甲之令。庚甲之義,見於易之巽蠱二卦。巽以二陰從四陽,柔皆順乎剛,故利用庚;蠱三陽三陰,剛上柔下,陰陽不交,故利用甲。先庚三日,丁也;後庚三日,癸也。先甲三日,辛生癸也;後甲三日,丁也。炁爲丁,質爲癸,金丹之道,用炁不用質。故用庚者,以月出庚方爲據,當於先庚;用甲者,以月滿東方甲爲據,當於後甲。氣息時,用先庚以採先天之氣;氣消時,用後甲以採後天之氣。癸未動,丁爲眞鉛,癸旣動,至丁又生眞鉛,殺盡癸水陰魔,而道可期矣。此外丹採藥之眞訣,不獨用女鼎者爲然也。

End of chapter

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