Charak Samhita
देशकालप्रमाणानां सात्म्यासात्म्यस्य चैव हि । सम्यग्योगोऽन्यथा ह्येषां पथ्यमप्यन्यथा भवेत् ॥२९३॥
The medicines shall be prescribed after due consideration of desha (habitat), kala (season), pramana (dosage), satmya(adaptability) and asatmya (non-adaptability). If this is properly considered, then it is pathya (beneficial to body systems). Otherwise it is non-beneficial.
english translation
dezakAlapramANAnAM sAtmyAsAtmyasya caiva hi । samyagyogo'nyathA hyeSAM pathyamapyanyathA bhavet ॥293॥
hk transliteration by Sanscript