An excellent use case for the recently discussed AI-generated CBETA translations!
Searching around, I found the Chinese name for the act (覆鉢羯磨) and from there a parallel in the Mūlasarvāstivāda-vinaya (T24n1451_004) (with another possible attestation at X40n0719_013)
Perhaps @cdpatton can double check the Chinese above? 
And thanks @SebastianN and Ven @Vimala for the amazing new tool! 