1 Gita Sloka Every Day - Chapter 17 - Shraddhatraya Vibhaga Yoga - Sloka 25

The entire content of this mail is from Shri V N Gopala Desikan's  Srimad Bhagavad Gita, published by Vishishtadvaita Research Centre, Chennai and The Bhagavad Gita by Swami Chidbhavananda published by Ramakrishna Mission

Demerits Turned into Merits 23-28
1 Gita Sloka  Every Day - Chapter 17 - Shraddhatraya Vibhaga Yoga - Sloka 25

Tad iti anabhisamdhaya phalam yajna tapah kriyah

Dana kriyas ca vividhah kriyante moksakanksibhih 25

तद् इति अनभि संध्या फलम् यज्ञ तपः क्रियाः I 

दान क्रियाः च विविदः क्रियन्ते मोक्ष आकाङ्क्शभिः II श्लोक 25

Uttering "Tat" without aiming at the fruits, are the acts of sacrifice and austerity and the various of gift performed by the seekers of Moksha. 

The word "Tat" refers to Brahman. All actions belong to Iswara and not to the individual souls.Therefore, while undertaking a karma, the thought should be invoked that it belongs to Brahman. Even the best of the actions, done for oneself, begets evil. But even the worst of the actions, like a warfare, waged for the service of the Lord, is freed from all sins. And war has its inevitable place in the cosmic plan. 

While engaging himself in the Yajna, dana and tapas, the sadhaka is firm in the thought that the Lord is getting His work done. Such a one attains Moksha.