Yahya related to me from Malik from Humayd at-Tawil that Anas ibnMalik said, "We once travelled with the Messenger of Allah, may Allahbless him and grant him peace, in Ramadan, and those who were fastingdid not find fault with those who were not, and those who were notfasting did not find fault with those who were."
USC-MSA web (English) reference: Book 18, Hadith 23
Arabic reference: Book 18, Hadith 657