註四十二章經 1.51

1.51

梵語優婆塞，此云清信男。五事，即五戒也，謂不殺、不盜、不邪行、不妄語、不飲酒。懈退者，謂行之不專也，或中道而廢也。

In Sanskrit upāsaka; here it means 'pure-believing layman.' The five matters are the five precepts: namely, not killing, not stealing, not committing sexual misconduct, not lying, and not drinking intoxicants. 'Remissness or retreat' means practicing them without dedication, or giving up halfway.