Manusmriti
तेभ्योऽधिगच्छेद् विनयं विनीतात्माऽपि नित्यशः । विनीतात्मा हि नृपतिर्न विनश्यति कर्हि चित् ॥ ३९ ॥
Let him, though he may already be modest, constantly learn modesty from them; for a king who is modest never perishes.
english translation
tebhyo'dhigacched vinayaM vinItAtmA'pi nityazaH । vinItAtmA hi nRpatirna vinazyati karhi cit ॥ 39 ॥
hk transliteration by Sanscript