Astanga Hrudaya
अर्थैरसात्म्यैः संयोगः कालः कर्म च दुष्कृतम्। हीनातिमिथ्यायोगेन भिद्यते तत्पुनस्त्रिधा॥३५॥
The causes of Dosha increase can be categorized as - Less involvement (heena yoga), - Wrong involvement (Mithya yoga) - Over involvement (Atiyoga) Of Artha – sense organs Kala – season Karma – action . So, less, wrongful or more involvement of sense organs / seasons / action leads to Dosha imbalance. It is explained further.
english translation
arthairasAtmyaiH saMyogaH kAlaH karma ca duSkRtam। hInAtimithyAyogena bhidyate tatpunastridhA॥35॥
hk transliteration by Sanscript