nodguṇṭhikākṛtāyāglānāya dharmaṃ deśayiṣyāma iti śikṣā karaṇīyā |
mi na bar mgo g-yogs pa daṅ |
84. “We will not teach Dharma to one having his head covered who is not ill,” is a precept which should be observed.
http://www2.hf.uio.no/common/apps/permlink/permlink.php?app=polyglotta&context=ctext&uid=fe3924be-2f1f-11e3-942f-001cc4ddf0f4