These brāhmaṇas take to education, austerity and vows only for the purpose of maintaining the body. They shall be devoid of discrimination between what to eat and what not to eat. They will acquire money, begging from door to door, simply for the satisfaction of the body.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
सर्वभक्षा द्विजा वृत्त्यै धृतविद्या तपोव्रताः । वित्तदेहेन्द्रियारामा याचका विचरन्त्विह
sarvabhakṣā dvijā vṛttyai dhṛtavidyā tapovratāḥ | vittadehendriyārāmā yācakā vicarantviha
SB 4.2.26