Musnad Ahmad 687
It was narrated that Mujahid said:
`Ali (رضي الله عنه) said: I set out and came to a garden and [the owner hired me to draw water]-a date for a bucket. I drew water until I filled my palm [with dates]. Then I went to the water and drank from it. Then I came to the Prophet (ﷺ) and gave him some of the dates to eat, and I ate some of them.
حَدَّثَنَا أَسْوَدُ، حَدَّثَنَا شَرِيكٌ، عَنْ مُوسَى الصَّغِيرِ الطَّحَّانِ، عَنْ مُجَاهِدٍ، قَالَ قَالَ عَلِيٌّ خَرَجْتُ فَأَتَيْتُ حَائِطًا قَالَ فَقَالَ دَلْوٌ بِتَمْرَةٍ قَالَ فَدَلَّيْتُ حَتَّى مَلَأْتُ كَفِّي ثُمَّ أَتَيْتُ الْمَاءَ فَاسْتَعْذَبْتُ يَعْنِي شَرِبْتُ ثُمَّ أَتَيْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَأَطْعَمْتُهُ بَعْضَهُ وَأَكَلْتُ أَنَا بَعْضَهُ‏.‏