योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-63, verse-20

एवं ये निहता राम किं ते कुर्वन्ति कथ्यताम् ।
अज्ञत्वान्न गता मुक्तिं चेतनान्न दृषत्स्थिताः ॥ २० ॥

evaṃ ye nihatā rāma kiṃ te kurvanti kathyatām ,
ajñatvānna gatā muktiṃ cetanānna dṛṣatsthitāḥ 20

20. Say then, O Rama, what became of those Rakshasas, who were thus slain by Gods; they could neither obtain their liberation owing to their ignorance, nor could they be transformed to stones with their intelligent souls.