Bhagavad Gita 17.17

śraddhayā: with faith;

parayā: transcendental;

taptam: executed;

tapaḥ: austerity;

tat: that;

tri: vidham — of three kinds;

naraiḥ: by men;

aphala: ākāṅkṣibhiḥ — who are without desires for fruits;

yuktaiḥ: engaged;

sāttvikam: in the mode of goodness;

paricakṣate: is called .;