Sayyidah Aishah (may Allah be pleased with her) said: The Prophet (peace and blessings be upon him) would eat melon together with fresh dates and say: "We break the heat of this with the coolness of that, and the coolness of that with the heat of this."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصداق / 14638