Jami At Tirmidhi
1228
Sahih+3

Narrated 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

SahihAhmad Muhammad Shakir
SahihAl-Albani