Comparative evidence

h₂elgʷʰ

• OInd. arh- 'deserve' (Whitney 1885: 4); 'merit', 'be worthy' (of), 'have a claim' (to), 'be entitled' (to), 'be allowed' (to do anything); 'be obliged', 'be required' (to do anything); 'be worth'; 'counterbalance'; 'be able' (MW: 93)

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.