The Messenger of Allah ﷺ came to us accompanied by Ali bin Abu Talib, who was just recovering from an illness. We had clusters of dates hanging up, and the Prophet ﷺ began eating from them. Ali reached out to eat as well, but the Prophet ﷺ said, "Stop, Ali. You are still recovering."She said, I then prepared some chard and barley for the Prophet ﷺ, and the Prophet ﷺ said, "Ali, take some of this, for it will benefit you more."
حدثنا أبو بكر بن أبي شيبة حدثنا يونس بن محمد حدثنا فليح بن سليمان عن أيوب بن عبد الرحمن بن عبد الله بن أبي صعصعة ح و حدثنا محمد بن بشار حدثنا أبو عامر وأبو داود قالا حدثنا فليح بن سليمان عن أيوب بن عبد الرحمن عن يعقوب بن أبي يعقوب
دخل علينا رسول الله ﷺ ومعه علي بن أبي طالب وعلي ناقه من مرض ولنا دوالي معلقة وكان النبي ﷺ يأكل منها فتناول علي ليأكل فقال النبي ﷺ مه يا علي إنك ناقه قالت فصنعت للنبي ﷺ سلقا وشعيرا فقال النبي ﷺ يا علي من هذا فأصب فإنه أنفع لك
Its isnad is hasan. Tirmidhi narrated it in the Book of Medicine, chapter on what has been said about dieting, hadith 2037, from the hadith of Yunus bin Muhammad, with this chain, and he said, hasan, gharib. It contains Uthman bin Abdul-Rahman Taymi. Ibn Bashar said it is a good hadith. Hakim declared it sahih (4/407), as did Dhahabi. Abu Dawud also narrated it, hadith 3856, from the hadith of Abu Dawud and Abu Amir, from Fulayh, with this chain.