Canonical Ref: SP 31.80
Sanskrit (Devanāgarī)
यत्रैकत्र क्रियेच्छा च द्वितीये तद्विपर्ययः।
Canonical CTS URN Reference
Śṛṅgāraprakāśa of Bhoja, SP 31.80. Poorvam Open Research Engine (PORE) Corpus.