Sayyiduna Anas (may Allah be pleased with him) said: "If I break the fast, it is Allah's concession; and if I fast, it is better."
This was also narrated from Hasan bin Salih with his chain as marfu' (from the Prophet), and it is nothing.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصيام / 8170