Shiva Purana
फलकामनया कर्मकरणात्प्रतिबध्यते ॥ न कर्ममात्रकरणात्तस्मात्कर्मफलं त्यजेत् ॥ ४२ ॥
One is not subjected to bondage merely by the performance of rites. If the rites are performed with desire for the fruits thereof it results in bondage. Hence one shall abandon the fruits of actions.
english translation
phalakAmanayA karmakaraNAtpratibadhyate ॥ na karmamAtrakaraNAttasmAtkarmaphalaM tyajet ॥ 42 ॥
hk transliteration by Sanscript