Ayesha reported,

She said that the Prophet ﷺ came in to her one day and asked, "Do you have anything to eat?"We replied, "No."He said, "Then I am fasting."Then he came to us on another day, and we said, "Messenger of Allah, we have been given a gift of hays."He said, "Show it to me, for I had begun the day fasting." Then he ate.

Azami 4414

Sahih

عن عائشة أم المؤمنين قالت

دخل على النبي ﷺ ذات يوم فقال: هل عندكم شيء؟ فقلنا: لا، قال: فإني إذن صائم. ثم أتانا يوما آخر، فقلنا: يا رسول الله أهدي لنا حيس، فقال: أرينيه، فلقد أصبحت صائما، فأكل.

الأعظمي 4414صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Fasting
Chapter
Voluntary fasting and encouragement to do it
Section
Voluntary fasting without determining the intention the night before
Numbering
Jami al-Kamil 4414 (2nd edition)
Azami 4414