As long as one does not inquire about the spiritual values of life, one is defeated and subjected to miseries arising from ignorance. Be it sinful or pious, karma has its resultant actions. If a person is engaged in any kind of karma, his mind is called karmātmaka, colored with fruitive activity. As long as the mind is impure, consciousness is unclear, and as long as one is absorbed in fruitive activity, he has to accept a material body.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
पराभवस्तावदबोधजातो यावन्न जिज्ञासत आत्मतत्त्वम् । यावत्क्रियास्तावदिदं मनो वै कर्मात्मकं येन शरीरबन्धः
parābhavastāvadabodhajāto yāvanna jijñāsata ātmatattvam | yāvatkriyāstāvadidaṃ mano vai karmātmakaṃ yena śarīrabandhaḥ
SB 5.5.5