大般涅槃經集解 16.102

16.102

案僧亮曰：除八不淨，則生人淨想，是人福田也。名淨田者，草穀未分，不生穢想也。僧宗曰：答中有三譬。前譬明眾中善惡一往難知，但見清淨威儀便應供養。凡夫未得天眼，正應以四事觀察也。第二譬明真偽既亂，四事觀察，乃始終方知，不能交驗，應當撿問，尋其所說也。第三譬明苟不能分別，但生平等，則凡聖兩獲。若徒撿不得，則失聖人，空生紛紜，更成過咎。此即第一譬也。

Sengliang notes: Discarding the eight impure things gives rise to the conception of purity in people; such a person is a field of merit. Being called a pure field means that before weeds and grain are separated, no conception of defilement is aroused. Sengzong says: In the answer there are three parables. The first clarifies that the good and bad among the assembly are at first glance difficult to discern; merely seeing pure comportment, one should make offerings. Ordinary beings have not yet attained the divine eye and should properly observe through the four matters. The second clarifies that since the genuine and false are confused, observation through the four matters reveals them only over time from beginning to end, but cannot immediately verify them; one should investigate, question, and trace what they say. The third clarifies that if one cannot differentiate, merely by giving rise to an equal mind, both the ordinary and the holy are obtained. If one investigates in vain without result, one loses the sages and pointlessly generates confusion, which further results in fault. This is the first parable.