"Narrated Ibn `Abbas:\n\nAllah's Messenger (ﷺ) came to Medina and the people used to pay in advance the price of fruits to be delivered within one or two years. (The sub-narrator is in doubt whether it was one to two years or two to three years.) The Prophet (ﷺ) said, \"Whoever pays money in advance for dates (to be delivered later) should pay it for known specified weight and measure (of the dates).\n\nNarrated Ibn Abi Najih:\n\nas above, mentioning only specific measure.\n\nNarrated Ibn `Abbas:\n\nThe Prophet (ﷺ) came to Medina and the people used to pay in advance the price of dates to be delivered within two or three years. He said (to them), \"Whoever pays in advance the price of a thing to be delivered later should pay it for a specified measure at specified weight for a specified period.\"\n\nNarrated Ibn Abi Najih:\n\nas above, saying, \"He should pay the price in advance for a specified measure and for a specified period.\"\n\nNarrated Ibn `Abbas:\n\nThe Prophet (ﷺ) came (to Medina) and he told the people (regarding the payment of money in advance that they should pay it) for a known specified measure and a known specified weight and a known specified period.\n\nNarrated Ibn `Abbas:\n\nThe Prophet (ﷺ) came to Medina and the people used to pay in advance the prices of fruits to be delivered within two to three years. The Prophet (ﷺ) said (to them), \"Buy fruits by paying their prices in advance on condition that the fruits are to be delivered to you according to a fixed specified measure within a fixed specified period.\" Ibn Najih said, \" ... by specified measure and specified weight.\""