श्रीमद् भगवद्गीता

मूल श्लोकः

यज्ञे तपसि दाने च स्थितिः सदिति चोच्यते।

कर्म चैव तदर्थीयं सदित्येवाभिधीयते।।17.27।।

English Commentary By Swami Sivananda

17.27 यज्ञे in sacrifice, तपसि in austerity, दाने in gift, च and, स्थितिः steadiness, सत् Sat, इति thus, च and, उच्यते is called, कर्म action, च and, एव also, तदर्थीयम् in connection with these or for the sake of the Supreme, सत् Sat, इति thus, एव even, अभिधीयते is called.

Commentary:
If you perform sacrifice, austerity, gift and all actions in a spirit of total surrender to the Lord or the Eternal Being with purity and sincerity of heart, you will attain the highest goal of life or immortality, freedom and eternal bliss. If you do them in the name and for the sake of Brahman you will attain perfection and supreme peace of the Absolute.If you pin your faith on the glory and power of this name Om or Om Tat Sat, you will be freed from the bondage of birth and death. If you perform any sacrifice, austerity or charity or any action in a selfless and motiveless spirit, surrendering all the actions and their rewards to the Lord and if you utter the word Sat with faith, feeling and devotion, you will attain perfection and success in the action.Even the imperfect and nonSattvic acts of sacrifice, austerity and gift will be turned into perfect and Sattvic ones.These Sacrifice, austerity and gift.

Hindi Translation Of Sri Shankaracharya's Sanskrit Commentary By Sri Harikrishnadas Goenka

।।17.27।।जो यज्ञकर्ममें स्थिति है? जो तपमें स्थिति है और जो दानमें स्थिति है? वह भी सत् है ऐसा विद्वानोंद्वारा कहा जाता है। तथा उन यज्ञादिके लिये जो कर्म है अथवा जिसके तीन नामोंका प्रकरण चल रहा है? उस ईश्वरके लिये जो कर्म है? वह भी सत् है यही कहा जाता है। इस प्रकार किये हुए यज्ञ और तप आदि कर्म? यदि असात्त्विक और विगुण हों तो भी श्रद्धापूर्वक परमात्माके तीनों नामोंके प्रयोगसे सगुण और सात्त्विक बना लिये जाते हैं।

English Translation By Swami Adidevananda

17.27 Devotion to sacrifice, austerities and gifts is also called Sat; and so any act for such purposes is named Sat.

English Translation By Swami Sivananda

17.27 Steadfastness in sacrifice, austerity and gift, is also called 'Sat' and also action in connection with these (or for the sake of the Supreme) is called 'Sat'.

English Translation By Swami Gambirananda

17.27 And the steadfastness in sacrifice, austerity and charity is spoken of as sat. And even the action meant for these is, verily, called as sat (good).