satkara-mana-pujartham tapo dambhena caiva yat |
kriyate tad iha proktam rajasam calam adhruvam || 17.18 ||
sat-kara — respect; mana — honor; puja — and worship; artham — for the sake of; tapah — austerity; dambhena — with pride; ca — also; eva — certainly; yat — which; kriyate — is performed; tat — that; iha — in this world; proktam — is said; rajasam — in the mode of passion; calam — flickering; adhruvam — temporary.
Penance performed out of pride and for the sake of gaining respect, honor and worship is said to be in the mode of passion.It is neither stable nor permanent.
If one is doing some one a favor with the intent of gaining something in return, he/she surely will not do it when he/she gains nothing in return. That means the favor/action will not be consistent. Only when one becomes free of such intentions and is situated in the self, can one benefit others without interruption.