"The Messenger of Allah came to me one day and said: 'Do you have anything (to eat) we said: 'No.' he said: 'Then I am fasting."
Sunan an-Nasa'i Book 22, Hadith 238
← Previous Hadith "Do you have anything this morning that you can give me to eat?" we would say no, and he would say: "I am fasting." Then after that he came and she said: "I have been given a gift." He said: "What is it?" she said: "Hais." He said: "I started the day fasting," but then he ate.

Sunan an-Nasa'i Book 22, Hadith 237 Next Hadith → "Do you have any food?" and Aishah said: "O Messenger of Allah, we have been given some Hais." So he called for it, and said: "I started the day fasting," then he ate.

Sunan an-Nasa'i Book 22, Hadith 239