Māṇḍūkī Śikṣā 41

41

prayuñjyānnātitīkṣṇena kaṇṭhena sṛdunādinā
prātarvadennityamuraḥ sthitena svareṇa śārdūlarutopamena
mādhyandine kaṇṭhagatena caiva cakāhvasaṃkūjitasannibhena

nor with too harsh a throat, he should recite with a gentle resonance. / In the morning he should always recite with a tone situated in the chest, resembling the roar of a tiger; / at midday, with [a tone] situated in the throat, like the calling of the cakravāka;