There is no problem in the sale of the fruit of date palms which are on the trees, whether they be ripe or unripe. However, the payment in exchange must not be dates, whether they be from the same tree or another. However, there is no problem if the fruit is sold for ripe ruṭab [soft, moist dates] or unripe ones that have not yet become dates.
If someone owns one date palm in the house of another person and getting to it is difficult for him, then, in case the quantity is estimated and the owner of the date palm sells it to the owner of the house and receives dates in exchange, there is no problem.
Ruling 2112.* There is no problem in selling cucumbers, aubergines, vegetables, and the like which are picked a number of times a year as long as the produce has become apparent and is visible and the number of times the buyer will pick and purchase the produce has been specified. However, if the produce has not become apparent and visible, selling it is not permitted based on obligatory precaution.