大般涅槃經義記 3.221

3.221

第二段中句別有四：一舉如來聽諸比丘罷道行婬證非性罪、二「復應」下明婬舊法非我過咎、三「如來在」下明婬不障生天解脫成前第一、四「古今有」下結前第二。

In the second section, there are four distinct phrases: first, raising the Tathāgata's permission for monks to renounce the path and engage in sexual intercourse to prove that it is not an intrinsic offense; second, from "Further, one should" and below clarifies that sexual intercourse is an ancient practice and not my fault; third, from "When the Tathāgata was in" and below clarifies that sexual intercourse does not obstruct rebirth in heaven or liberation, corroborating the first [phrase] above; fourth, from "Ancient and modern have" and below concludes the second [phrase] above.