Ramayana
राक्षसानांबलौघस्यवानरेन्द्रबलस्यच । नैतयोर्विद्यतेसन्धिर्देवदानवयोरिव ॥ ६-२४-३४
''Alliance is not possible between Rakshasas and army of Bears and Vanaras, just as alliance is not possible between gods and demons. ॥ 6-24-34॥
english translation
rAkSasAnAMbalaughasyavAnarendrabalasyaca । naitayorvidyatesandhirdevadAnavayoriva ॥ 6-24-34
hk transliteration by Sanscript