Valmiki Ramayana 1.37.14

समंततः तदा देवीम् अभ्यषिंचत पावकः ।सर्व स्रोतांसि पूर्णानि गंगाया रघुनन्दन॥

samaṃtataḥ tadā devīm abhyaṣiṃcata pāvakaḥ |sarva srotāṃsi pūrṇāni gaṃgāyā raghunandana ||

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