四分律行事鈔資持記 1.286

1.286

次三人中，初示所以。耳舌兩根，證法為要故。大下，引法釋成。二能即上說聽。盲具二能，所以成足；乖別之相，容他檢故。準下，引論以決。亦取辨了羯磨者耳。

Regarding the next three kinds of persons: first, it indicates the reason. This is because the two faculties of ear and tongue are essential for testifying to the Dharma. From 'Great' onward, it cites the Dharma to explain and establish it. The 'two capacities' refer to the aforesaid speaking and listening. The blind possess the two capacities, which is why they constitute sufficiency; as for marks of non-conformity or separation, they allow for inspection by others. From 'Based on' onward, it cites the treatise to determine it. It also requires someone who clearly discerns the karmavācanā.