Rasakaumudi (Shrikantha Dikshita) 3.18

Rasakaumudī (Śrīkaṇtha Dīkṣita) 3.18

tantrīdārthe'tidārghyārthaṃ calaśaṅkorgalasthite
randhre nyasyāyasaṃ kīlaṃ sthiraśaṅkau niveśayet