दुर्जनेन समं सख्यं प्रीतिं चापि न कारयेत्।
उष्णो दहति चांगारः शीतः कृष्णायते करम्॥

durjanena samaṃ sakhyaṃ prītim cāpi na kārayet।
uṣṇo dahati ca aṅgāraḥ śītaḥ kṛṣṇāyate karam॥

One should avoid friendship or close relationship with the wicked person who resembles charcoal, which if hot, burns you and, if cold, blackens your hand.