佛說目連問戒律中五百輕重事經 1.61

1.61

問：「大僧盡行，唯有沙彌在界。為得不？」答：「但有一清信士，界便不壞，況沙彌！盡無一宿界壞，若僧盡去不還，亦不須解。」

Question: "If the fully ordained bhikṣus have all departed and only śrāmaṇeras remain in the sīmā, is it valid?" Answer: "If there is just one pure-believing layman (upāsaka), the sīmā is not ruined, how much less with a śrāmaṇera! If entirely empty for one night, the sīmā is ruined. If the saṃgha has all left and will not return, there is also no need to dissolve it."