Matsya Purana 58.28

58.28

puṣpagandhairalaṅkṛtya dvārapālān samantataḥ.
paṭhadhvamiti tān brūyādācāryastvabhipūjayet.. 58.27 ..

Then the pitchers full of water should be covered with clothes, incensed with the odour of flowers and fruits.—26. After garlanding the warders and putting sandal paste on them, the Âchârya priest should ask the warders (the Dvârapâla priests) by saying "paṭhadhvam" to chant the Veda.—27.