坐禪三昧經 1.76

1.76

觀無常亦念息入出——觀諸法無常、生滅、空、無吾我，生時諸法空生，滅時諸法空滅，是中無男、無女、無人、無作、無受，是名隨無常觀。

When contemplating impermanence, one also is mindful of breathing in and out: one contemplates dharmas as impermanent, arising and ceasing, empty, and devoid of self or mine; when they arise, dharmas arise empty; when they cease, dharmas cease empty; wherein there is no male, no female, no person, no agent, and no recipient. This is called contemplation in conformity with impermanence.