Mahabharata 6.39.17

श्रद्धया परया तप्तं तपस्तत्त्रिविधं नरैःअफलाकाङ्क्षिभिर्युक्तैः सात्त्विकं परिचक्षते

śraddhayā parayā taptaṃ tapastattrividhaṃ naraiḥaphalākāṅkṣibhiryuktaiḥ sāttvikaṃ paricakṣate

Our plain-language meaning of this verse is waiting for scholar review.