Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Shraddhatraya-Vibhaga Yoga Chapter 17, Verse 17.17.
Sanskrit
श्रद्धया परया तप्तं तपस्तत्त्रिविधं नरैः । अफलाकाङ्क्षिभिर्युक्तैः सात्त्विकं परिचक्षते ॥ १७.१७ ॥
Hindi
फल को न चाहने वाले योगी पुरुषों द्वारा परम श्रद्बा से किये हुए उस पूर्वोक्त्त तीन प्रकार के तप को सात्विक कहते हैं|
English
If these three types of harmony are practised with supreme faith, a pure heart, truthful intentions, without any desire for rewards, and with a balanced mind and a peaceful soul, this is considered to be pure and total harmony and a definite sign that a person has chosen to follow the Saatvic path of light and “goodness.”