CC Madhya 8.86
śānta-dāsya-sakhya-vātsalyera guṇa madhurete vaise
guṇa-ādhikye — by the increase of transcendental qualities; svāda-ādhikya — increase of taste; bāḍe — increases; prati-rase — in each mellow; śānta — of neutrality; dāsya — of servitude; sakhya — of fraternity; vātsalyera — and of parental affection; guṇa — the qualities; madhurete — in the conjugal mellow; vaise — appear.
“As the qualities increase, so the taste also increases in each and every mellow. Therefore the qualities found in śānta-rasa, dāsya-rasa, sakhya-rasa and vātsalya-rasa are all manifested in conjugal love [mādhurya-rasa].