Skandapurana 1.3.11.12

1.3.11.12

na viśvasetpūrvavirodhinā kvacitparājitāḥ smo'tha bale tvayādhunā..
purāṇaduṣṭāḥ kathamadya vai punarmaṃtraṃ vikartuṃ na ca te yateran.. 13.12 ..

One should never trust a former adversary. ‘Now we are conquered by you in strength,’ [they say]; / being chronically wicked, why would they not strive again today to hatch a plot?”