Valmiki Ramayana 2.117.11

अनसूया व्रतै: स्नाता प्रत्यूहाश्च निवर्त्तिता: ।देवकार्यनिमित्तं च यया संत्वरमाणया ।दशरात्रं कृता रात्रि: सेयं मातेव ते ऽनघ॥

anasūyā vratai: snātā pratyūhāśca nivarttitā: |devakāryanimittaṃ ca yayā saṃtvaramāṇayā |daśarātraṃ kṛtā rātri: seyaṃ māteva te 'nagha ||

Our plain-language meaning of this verse is waiting for scholar review.