Manava Dharmashastra 7.36

Manvarthamuktāvalī 7.36

veṇudaṇḍamudakasahitaṃ kamaṇḍaluṃ yajñopavītaṃ kuśamuṣṭiṃ śobhane ca sauvarṇakuṇḍale dhārayet|