Manusmriti
निग्रहं प्रकृतीनां च कुर्याद् योऽरिबलस्य च । उपसेवेत तं नित्यं सर्वयत्नैर्गुरुं यथा ॥ १७५ ॥
That (prince) who will coerce both his (disloyal) subjects and the army of the foe, let him ever serve with every effort like a Guru
english translation
nigrahaM prakRtInAM ca kuryAd yo'ribalasya ca । upaseveta taM nityaM sarvayatnairguruM yathA ॥ 175 ॥
hk transliteration by Sanscript