ChU, 4, 17, 8.1 evam eṣāṃ lokānām āsāṃ devatānām asyās trayyā vidyāyā vīryeṇa yajñasya viriṣṭaṃ saṃdadhāti /

BhāgPur, 4, 24, 38.1 nama ūrja iṣe trayyāḥ pataye yajñaretase /

BhāgPur, 11, 6, 11.1 yaś cintyate prayatapāṇibhir adhvarāgnau trayyā niruktavidhineśa havir gṛhītvā /