Śrīmad-Bhāgavatam · Text 12.3.20
Who is speaking and story frame
त्रेतायां धर्मपादानां तुर्यांशो हीयते शनै: ।
अधर्मपादैरनृतहिंसासन्तोषविग्रहै: ॥ २० ॥
tretāyāṁ dharma-pādānāṁ
turyāṁśo hīyate śanaiḥ
adharma-pādair anṛta-
hiṁṣāsantoṣa-vigrahaiḥ
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.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.