Charak Samhita
दृष्टिर्निराकुला भाति निर्मले नभसीन्दुवत्। हरेणुकां प्रियङ्गुं च पृथ्वीकां केशरं नखम् ॥२०॥
॥ Dhumapana (Inhalation of smoke/vapors), its types, directions of use and indications॥ 1. Prayogika dhumapana (therapeutic inhalation for prevention of disease): Harenuka (Pisum sativum L. ), priyangu (Callicarpa macrophylla Vahl ),prithvika ( Amomum subulatum Roxb.), kesara(Crocus Sativus L.),nakha( Ipomoea Pes-tigridis L.),
english translation
dRSTirnirAkulA bhAti nirmale nabhasInduvat। hareNukAM priyaGguM ca pRthvIkAM kezaraM nakham ॥20॥
hk transliteration by Sanscript