Kautilya's Arthashastra 9.3.42

9.3.42

evam upalabhya - pare parebhyaḥ sve svebhyaḥ sve parebhyaḥ svataḥ pare /
rakṣyāḥ svebhyaḥ parebhyaś ca nityam ātmā vipaścitā //E

Enemies from enemies, subjects from subjects, subjects from enemies, and enemies from subjects should ever be guarded; and both from his subjects and enemies, a learned man should ever guard his own person.