Bhagavad Gita · Chapter 17: The Three Kinds of Faith

Bhagavad Gita 17.25

tadityanabhisandhāya phalaṃ yajñatapaḥkriyāḥ | dānakriyāśca vividhāḥ kriyante mokṣakāṅkṣibhiḥ ||

Saying "Tat" ("That"), and without aiming at any reward, those who seek liberation perform the various acts of sacrifice, austerity, and giving.

Modern context

'Tat', 'That', is said by those who seek freedom, as they act without aiming at any reward. Saying 'That' is a way of pointing beyond oneself: this is not for me; it is for That. It reminds the doer that the action belongs to something larger. Those who seek liberation use it to keep their actions free of selfish aims.