Aśauca-vidhi (Rules of Impurity) within Śrāddha-kalpa — Chapter on Testing/Selecting Brahmanas and Honoring the Atithi
वृथा मुण्डाश्च जटिलाः सर्वे कार्पटिकास्तथा / निर्घृणान्भिन्नवृत्तांश्च सर्वभक्षांश्च वर्जयेत्
vṛthā muṇḍāśca jaṭilāḥ sarve kārpaṭikāstathā / nirghṛṇānbhinnavṛttāṃśca sarvabhakṣāṃśca varjayet
One should avoid those who shave their heads or wear matted hair in vain, those wearing rags for show, the cruel, those of bad conduct, and those who eat indiscriminately.