Shiva Purana

siva.sh/siva-purana/rudra-samhita/96/31

असत्यमहितं पश्चात्सांप्रतं श्रुतिसुन्दरम् ।। सुबुद्धिर्वक्ति शत्रुर्हि हितं नैव कदाचन ।। ३१ ।।

sanskrit

It is only an enemy, though keen in intellect, who says what is pleasing to the ears now but what transpires to be untrue and unwholesome afterwards. He never speaks wholesome things.

english translation

asatyamahitaM pazcAtsAMprataM zrutisundaram || subuddhirvakti zatrurhi hitaM naiva kadAcana || 31 ||

hk transliteration by Sanscript