Charak Samhita
बुद्धिः पश्यति या भावान् बहुकारणयोगजान्। युक्तिस्त्रिकाला सा ज्ञेया त्रिवर्गः साध्यते यया ॥२५॥
The intellect perceives things by combination of multiple factors, valid for past, present and future is termed as yukti (reasoning). This is helpful in fulfilling three basic objects of human life (dharma, i.e. duties, wealth, desire).
english translation
buddhiH pazyati yA bhAvAn bahukAraNayogajAn। yuktistrikAlA sA jJeyA trivargaH sAdhyate yayA ॥25॥
hk transliteration by Sanscript