Srimad-Bhagavatam: Canto 12 - Chapter 1 - Verse 20

Sanskrit:

त्रेतायां धर्मपादानां तुर्यांशो हीयते शनै: ।अधर्मपादैरनृतहिंसासन्तोषविग्रहै: ॥ २० ॥

ITRANS:

tretāyāṁ dharma-pādānāṁturyāṁśo hīyate śanaiḥadharma-pādair anṛta-hiṁṣāsantoṣa-vigrahaiḥ

Translation:

In Tretā-yuga each leg of religion is gradually reduced by one quarter by the influence of the four pillars of irreligion — lying, violence, dissatisfaction and quarrel.

Purport:

By falsity truth is diminished, by violence mercy is diminished, by dissatisfaction austerity is diminished, and by quarrel charity and cleanliness are diminished.