A form of Lokopacāra Vinaya (formal rules of modesty);
observance of modesty to the teacher on the ground that 'he has imparted knowledge to me'.
kāryaṃ- śrutaprāpaṇādikaṃ hetuṃ kṛtvā, śrutaṃ prāpito'hamaneneti hetorityartho, viseṣeṇa vinaye tasya varttitavyaṃ tadanuṣṭhānaṃ ca karttavyam.
(Sthā 7.137 Vṛ Pa 388)