Comparative evidence

h₁ers, h₂ers, h₃ers

• OInd. ṛṣ- 'rush', 'push' (Whitney 1885: 16); 'go', 'move'; 'stab', 'kill'; 'push', 'thrust' (MW: 226)

References

MW = Monier-Williams, M. 1899. A Sanskrit-English Dictionary. Clarendon Press.
Whitney 1885 = Whitney W. D. 1885. The roots, verb forms and primary derivatives of the Sanskrit language. A supplement to his Sanskrit grammar. Leipzig.