Bhagavad Gītā Chapter 3, Verse 21: Krishna to ArjunaKarma-Yoga

Bhagavad Gītā 3.21Chapter 3 · Karma-Yoga · KrishnaArjuna · anuṣṭubh
यद् यदाचरति श्रेष्ठस् तत् तदेवेतरो जनः
स यत् प्रमाणं कुरुते लोकस् तदनुवर्तते
yad yad ācarati śreṣṭhas tat tad evetaro janaḥ
sa yatyad(218 verses)accusative neuter singular nounwhich, who (relative pronoun) pramāṇaṃ kurute lokas tad anuvartattad(305 verses)accusative neuter singular nounthat (distal demonstrative); also 3rd-person pronoune
spokensingle-voice recital; rendered via IndicF5 conditioned on a Sanskrit reference clip
meaning

Whatever a great person does, others do too; whatever standard that person sets, the world follows.