"The Messenger of Allah came to us one day and we said: 'We have been given some Hais and we set aside some for you.' He said: 'I am fasting, but he broke his fast. (Using translation from Nasāʾī 2325)
أَتَانَا رَسُولُ اللهِ ﷺ يَوْمًا فَقُلْنَا أُهْدِيَ لَنَا حَيْسٌ قَدْ جَعَلْنَا لَكَ مِنْهُ نَصِيبًا فَقَالَ «إِنِّي صَائِمٌ» فَأَفْطَرَ