Sunan Ibn Majah 2217
سنن ابن ماجه#2217SahihIt was narrated from Anas bin Malik that :the Messenger of Allah (ﷺ) forbade selling fruits until they have changed the color, and selling grapes until they have turned black, and selling grains until they have hardened
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih
In-book reference: 12:81