“On the whole ... the language of the first nine Mandalas must be regarded as homogeneous, inspite of traces of previous dialectal differences... With the tenth Mandala it is a different story. The language here has definitely changed.”

B.K. Ghosh in The History and Culture of the Indian People, Vol. I: The Vedic Age edited by R.C. Majumdar, Bharatiya Vidya Bhavan Publications, Mumbai, 6th edition 1996. Quoted in Talageri, S. (2000). The Rigveda: A historical analysis. New Delhi: Aditya Prakashan.