四分律刪繁補闕行事鈔 1.403

1.403

五種病者。上四應得。狂中有三種，若全不覺好惡，應不得；餘二應得。《善見》云：癩癬莫問赤白黑，屏處，增長不增長俱得；露處反前不得。然癩病有二：一惡業所致，二四大違反則生。故《育王經》有疥癩須陀洹，瘡痍阿羅漢也。若出家已，癩者，一切僧事共作，若食莫令在眾，此《薩婆多》解。

Regarding the five kinds of illnesses: For the top four, one should obtain [the precepts]. Among the insane, there are three kinds: if one is entirely unaware of good and bad, one should not obtain them; for the other two, one should obtain them. The Samantapāsādikā says: Regarding leprosy and scabies, whether red, white, or black, if on hidden parts of the body, whether increasing or not increasing, in both cases one obtains [the precepts]; if on exposed parts, the opposite applies and one does not obtain them. However, leprosy has two causes: first, brought about by evil karma; second, produced when the four great elements fall into disharmony. Therefore the Aśokarājasūtra mentions a srotāpanna with scabies and leprosy, and an arhat with ulcerous sores. If, after having gone forth, one contracts leprosy, one performs all saṃgha affairs together; when eating, do not let him be in the midst of the assembly—this is the explanation in the Sarvāstivāda.