Comparative evidence

ǵerh₂

• OInd. jṝ-/jṛ-/jur 'waste away' (Whitney 1885: 55); 'make old', 'make decrepit', 'cause to grow old', 'humiliate'; 'grow old', 'become decrepit', 'decay', 'wear out', 'wither', 'be consumed', 'break up', 'perish' (MW: 424)

• OInd. jūrv- 'consume' (Whitney 1885: 55); 'consume by heat', 'singe', 'hurt' (MW: 424)

• OInd. jvar- 'be hot' (Whitney 1885: 57); 'be feverish', 'make feverish' (MW: 428)

• OInd. jval- 'burn', 'flame' (Whitney 1885: 57); 'burn brightly', 'blaze', 'glow', 'shine'; 'set on fire', 'make radiant', 'illuminate' (MW: 428)

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.