Muwatta Malik, Book 49, Hadith 27 (USC-MSA) ⓘ
Yahya related to me from Malik that he had heard that Isa ibn Maryam used to say, "O Banu Israil! You must drink pure water and the green things of the land and barley bread. Beware of wheat bread, for you will not be grateful enough for it."
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عِيسَى ابْنَ مَرْيَمَ، كَانَ يَقُولُ يَا بَنِي إِسْرَائِيلَ عَلَيْكُمْ بِالْمَاءِ الْقَرَاحِ وَالْبَقْلِ الْبَرِّيِّ وَخُبْزِ الشَّعِيرِ وَإِيَّاكُمْ وَخُبْزَ الْبُرِّ فَإِنَّكُمْ لَنْ تَقُومُوا بِشُكْرِهِ .
also referenced under: Book 49, Hadith 1700 (In-Book)