釋氏要覽 3.200

3.200

涅槃經云。髮長破戒之相○文殊問經云。髮長二指當剃○剃髮次第有四。第一上座。二髮長人。三若偕長聽先洗人。四有緣人（有勾當僧緣務人）已上四人。應相度尊卑急緩。推讓先之。

The Nirvāṇa-sūtra states: 'Long hair is a sign of breaking the precepts.' The Mañjuśrīparipṛcchā-sūtra states: 'When the hair is two fingers long, it should be shaved.' The order for shaving hair has four ranks: first, the sthavira (senior elder); second, the person whose hair is long; third, if they are equally long, the one who washed first is permitted; fourth, the person with monastic affairs (a person attending to the Sangha's duties). For the above four kinds of people, one should evaluate seniority and urgency, deferring and letting them go first.