Jami` at-Tirmidhi 1228
جامع الترمذي#1228SahihNarrated Anas: "The Messenger of Allah (ﷺ) prohibited selling grapes until they appear and selling grains until they become firm." [Abu 'Eisa said:] This Hadith is Hasan Gharib, we do not know of it being Marfu' except from the narration of Hammad bin Salamah
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan
Zubair Ali ZaiSahih Muslim
In-book reference: 14:28