उभे प्रज्ञे वेदितव्ये ऋज्वी वक्रा च भारत ubhE pragyE vEditavyE rijvii vakraa cha bhaarata

ubhE pragyE vEditavyE rijvii vakraa cha bhaarata

jaanan vakraam na sEvEta pratibaadhEta chaagataam

उभे प्रज्ञे वेदितव्ये ऋज्वी वक्रा च भारत |

जानन् वक्राम् न  सेवेत प्रतिबाधेत चागताम् 

O descendant of Bharata, you (or a king) should know both, the straight and the crooked way 

Know the crooked way, but do not use it. However to prevent an upcoming disaster, you could use the crooked way

शान्तिपर्वं महाभारत  Chapter 100 Verse 5