四分律刪繁補闕行事鈔 2.438

2.438

第四多少者。境想之法，或四或五；恐人未練，且依殺戒，立相列之。初句人作人想（心境相當），二人非人疑（境定心疑），三人非人想（境定心差），四非人人想（境差心定），五非人人疑（境差心轉，雙闕二緣）。五句如此。所以多少者，但由第三，人非人想；此一不定故，或四或五。

Fourth: regarding numbers. The method of object ideation has either four or five [clauses]; fearing that people are not yet practiced, I shall temporarily set out the aspects and list them based on the precept against killing. The first clause: human, thinking it is a human (mind and object correspond). Second: human, doubting it is a non-human (object is fixed, mind doubts). Third: human, thinking it is a non-human (object is fixed, mind errs). Fourth: non-human, thinking it is a human (object errs, mind is fixed). Fifth: non-human, doubting it is a human (object errs, mind shifts; both conditions are lacking). The five clauses are like this. The reason for the variation in number is solely due to the third, human thinking it is a non-human; because this single one is indeterminate, there are either four or five.