Musnad Ahmad 1153:1210

Abu Nuh narrated to us, Malik ibn Anas informed us, from Abdullah ibn Abd al-Rahman ibn Ma'mar, from Abu Yunus, from Aisha, who said: A man asked the Messenger of Allah, peace and blessings of Allah be upon him, while he was standing at the door and I was listening. He said: "I wake up in a state of janabah (major ritual impurity) while I intend to fast." The Prophet, peace and blessings of Allah be upon him, said: "I wake up in a state of janabah while I intend to fast." The man said: "I am not like you; Allah has forgiven you your past and future sins." The Prophet, peace and blessings of Allah be upon him, became angry and said: "I hope that I am the most fearful of you toward the Lord, Mighty and Majestic is He, and the most knowledgeable of you regarding what I must guard against."