Chapter 17 · The Three Kinds of Faith · Krishna said
Bhagavad Gita 17.25 — Tat — without seeking reward
तदित्यनभिसन्धाय फलं यज्ञतपःक्रियाः। दानक्रियाश्च विविधाः क्रियन्ते मोक्षकाङ्क्षिभिः ॥
tadityanabhisandhāya phalaṃ yajñatapaḥkriyāḥ | dānakriyāśca vividhāḥ kriyante mokṣakāṅkṣibhiḥ ||
Meaning
Saying 'Tat', seekers of liberation perform many acts of sacrifice, austerity and charity without desiring any reward.