´It 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.
Hadith ReferenceSunan Ibn Majah / The Chapters on Business Transactions / Hadith: 2217
Hadith Gradingالألبانی:صحيح ق دون النهي الثاني والثالث | زبیر علی زئی:صحيح