Garudapurana 1.168.25

1.168.25

deśakālavayovahnisāmyaprakṛtibheṣajam /
dehasattvabalavyādhīnbuddhvā karma samācaret //
bahūdakanago 'nūpaḥ kaphamārutakopavān /
jāṅgalo 'paraśākhī ca raktapittagadottaraḥ //

Having understood the region, season, age, digestive fire, habituation, constitution, and medicine,
as well as body, mind, strength, and disease, one should perform the treatment.
A marshy region has abundant water and hills, and aggravates phlegm and wind;
a dry-shrub region has different trees, and is dominated by disorders of blood and bile.