Manusmriti

siva.sh/manusmriti/9/267

तत्सहायैरनुगतैर्नानाकर्मप्रवेदिभिः । विद्यादुत्सादयेच्चैव निपुणैः पूर्वतस्करैः ॥ २६७ ॥

sanskrit

By the means of clever reformed thieves, who associate with such (rogues), follow them and know their various machinations, he must detect and destroy them.

english translation

tatsahAyairanugatairnAnAkarmapravedibhiH | vidyAdutsAdayeccaiva nipuNaiH pUrvataskaraiH || 267 ||

hk transliteration by Sanscript