Ramayana
कच्चिदष्टादशान्येषु स्वपक्षे दश पञ्च च । त्रिभिस्त्रिभिरविज्ञातैर्वेत्सि तीर्थानि चारकैः ॥ २-१००-३६
I hope you collect information (of their secret efforts) intelligently through unrecognisable spies with three of them closely watching each of the eighteen officials (there are eighteen categories of officials in a kingdom) of the enemy's side and fifteen (officials) on your side. ॥ 2-100-36॥
english translation
kaccidaSTAdazAnyeSu svapakSe daza paJca ca । tribhistribhiravijJAtairvetsi tIrthAni cArakaiH ॥ 2-100-36
hk transliteration by Sanscript