“…Now, the use of the retroflex sound "ṇ" in "maṇi", possibly corroborates its Non-Indo-Aryan, ancient Dravidian origin. In a passage of Aitareya-Araṇyaka, certain Vedic sages instruct that when one is in doubt about whether a word should be pronounced with a dental "n" or a retroflex "ṇ", according to the teachings of sage Māṇḍūkeya, one should pronounce it with retroflex "ṇ" (Deshpande, 1979). As Deshpande contends, such passages conclusively prove that in the Vedic era, the doctrine of retroflex sounds such as "ṇ" or "ṣ", were not accepted by all the composers and reciters of the Vedic hymns.…”