Hadith.3866 - It is narrated from Ali bin Abi Hamzah, from Abu Basir, from Abu Abdillah (as), who said
I asked him about purchasing wheat and barley crops before they produce spikes while they are still grass.
Imam (as) said: "No, unless he buys it as fodder to feed animals, and then, if he wishes, he may leave it until it produces spikes."