(32) بَاب جَوَازِ صَوْمِ النَّافِلَةِ بِنِيَّةٍ مِنْ النَّهَارِ قَبْلَ الزَّوَالِ وَجَوَازِ فِطْرِ الصَّائِمِ نَفْلًا مِنْ غَيْرِ عُذْرٍ
'A'isha, the Mother of the Believers (Allah be pleased with her), reported:
The Apostle of Allah (ﷺ) came to me one day and said: Is there anything with you (to eat)? I said: No. Thereupon he said: I shall then be fasting. Then he came to us another day and we said: Messenger of Allah, hais has been offered to us as a gift. Thereupon he said: Show that to me; I had been fasting since morning. He then ate it. (DE)
Reference (DE): Sahih Muslim 1154 b (DE)
In-book reference (DE): Book 13, Hadith 221 (DE)
USC-MSA web (English) reference(deprecated numbering scheme): Book 6, Hadith 2574 (DE)