kāṅkṣantaḥ — desiring; karmaṇām — of fruitive activities; siddhim — perfection; yajante — they worship by sacrifices; iha — in the material world; devatāḥ — the demigods; kṣipram — very quickly; hi — certainly; mānuṣe — in human society; loke — within this world; siddhiḥ — success; bhavati — comes; karma-jā — from fruitive work.