BaudhDhS, 2, 18, 16.1 tatra maune yuktas traividyavṛddhair ācāryair munibhir anyair vāśramibhir bahuśrutair dantair dantān saṃdhāyāntarmukha eva yāvadarthasaṃbhāṣī na strībhir na yatra lopo bhavatīti vijñāyate //

BCar, 7, 9.1 tataḥ sa tairāśramibhiryathāvadabhyarcitaścopanimantritaśca /

ManuS, 6, 91.1 caturbhir api caivaitair nityam āśramibhir dvijaiḥ /