Subhashitam - 52

दुर्जनः प्रियवादि च नैतद्विश्वासकारणम् ।
मधु तिष्ठति जिह्वाग्रे हृदि हालाहलं विषम् ॥

Meaning:
A wicked person who speaks sweet is not trustworthy. On the tip of his tongue there is honey but dreadful poison in his heart.