Charak Samhita
नीलिनीं त्रायमाणां च सातलां त्रिवृतां वचाम्। सैन्धवं काललवणं पिप्पलीं चेति चूर्णयेत् ॥१३४॥
nilini (Indigofera tinctoria), trayamana (Gentiana kurrhoa), satala (Euphorbia Tirucalli), trivrita (Operculina turpethum), vacha (Acorus calamus), rock salt, kala lavana (black salt) and pippali (Piper longum).
english translation
nIlinIM trAyamANAM ca sAtalAM trivRtAM vacAm। saindhavaM kAlalavaNaM pippalIM ceti cUrNayet ॥134॥
hk transliteration by Sanscript