Bhagavad Gita Chapter 7.16
catur-vidhā bhajante māḿ
janāḥ su-kṛtino ’rjuna
ārto jijñāsur arthārthī
jñānī ca bharatarṣabha
Translation
O best among the Bharatas, four kinds of pious men begin to render devotional service unto Me—the distressed, the desirer of wealth, the inquisitive, and he who is searching for knowledge of the Absolute.