Al-Muwatta Hadith 18.13

Yahya related to me from Malik from Zayd ibn Aslam from Ata ibn Yasar that a certain man kissed his wife while he was fasting in Ramadan. This made him very anxious, and so he sent his wife to the Prophet, may Allah bless him and grant him peace, to ask him about that for him. She went in and saw Umm Salama, the wife of the Prophet, may Allah bless him and grant him peace, and mentioned the matter to her, and Umm Salama told her that the Messenger of Allah, may Allah bless him and grant him peace, used to kiss while he was fasting. So she went back and told her husband that, but it only made him find fault all the more and he said, "We are not like the Messenger of Allah, may Allah bless him and grant him peace. Allah makes permissible for the Messenger of Allah, may Allah bless him and grant him peace, whatever He wishes." His wife then went back to Umm Salama and found the Messenger of Allah, may Allah bless him and grant him peace, with her. The Messenger of Allah, may Allah bless him and grant him peace, said, "What's the matter with this woman?", and Umm Salama told him. The Messenger of Allah, may Allah bless him and grant him peace, said, "Didn't you tell her that I do that myself?" and she said, "I told her, and she went to her husband and told him, but it only made him find fault all the more and say, 'We are not like the Messenger of Allah, may Allah bless him and grant him peace. Allah makes permissible for His Messenger, may Allah bless him and grant him peace, whatever He wishes.' " The Messenger of Allah, may Allah bless him and grant him peace, got angry and said, "By Allah, I am the one with the most taqwa of Allah of you all, and of you all the one who best knows His limits."