tapas

His father, Hiranyakashipu, has extracted a boon of near-invulnerability through tapas , austerity so severe the worlds shake, and this is itself worth pausing on.

Again five: shaucha , purity; santosha , contentment; tapas , austerity; svadhyaya , self-study; ishvara-pranidhana , surrender to the Lord.

In one of the great creation hymns, at 10.190.1, the poet says that when the primordial heat, tapas , was kindled, two things were born first of all: rita and satya .

So he went into the forest and did tapas , ascetic heat, austerity practised until it burns, and the epics count it in lifetimes.

Then Sagara's descendant Bhagiratha undertook a punishing tapas , ascetic austerity, standing in penance for years to win a single boon: that the celestial Ganga be brought down from heaven to flow over the ash…

In the heat she sits between four fires with the summer sun overhead as the fifth, the panchagni tapas , the austerity of the five fires.

Tapas , disciplined ardour, the sustained heat of practice that burns away impurity and perfects the body and senses.

…eat power of Warmth was born that Unit." The Sanskrit names the power tapas , heat, the same word that will later mean ascetic austerity.