BaudhŚS, 1, 18, 4.0 atha dakṣiṇasyaiva puroḍāśasya pūrvārdhāt tryaṅgulaṃ vā caturaṅgulaṃ vājyena susaṃtṛptaṃ saṃtarpyāgreṇa dhruvāṃ yajamānabhāgaṃ nidadhāti //