Valmiki Ramayana 1.16.27
कौसल्यायै नरपतिः पायस अर्धम् ददौ तदा ।अर्धात् अर्धम् ददौ च अपि सुमित्रायै नराधिपः॥
kausalyāyai narapatiḥ pāyasa ardham dadau tadā |ardhāt ardham dadau ca api sumitrāyai narādhipaḥ ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book