四分律刪繁補闕行事鈔 3.61

3.61

五存亡進不。《僧祇》：齊三由旬，知其存亡。《五分》：知其在世在道以不。《薩婆多》：施主若死，若入異國，更求淨主等。《四分》無文，隨意採用。然淨施主法，必準論律名行高尚者，令遠近通知。若汎爾恒人，同寺便成失法（以不知，行業不應故）。

Fifth, whether to proceed depending on the [purification master's] survival or death. The Mahāsāṃghika-vinaya states: Within the limit of three yojanas, one must know whether he is alive or dead. The Pañcavargika-vinaya states: Know whether he is alive in the world or on the road or not. The Sarvāstivāda states: If the purification master dies or enters another country, seek another purification master, and so forth. The Dharmaguptaka has no explicit text; one may adopt these at will. However, the procedure for the purification master must, according to treatises and vinayas, rely on those whose reputation and conduct are lofty, so that people far and near are all informed of it. If an ordinary, common person is used, then within the same monastery it would constitute a loss of the procedure (because he lacks knowledge and his conduct is inappropriate).