as above, mentioning only specific measure.
Sahih al-Bukhari Book 35, Hadith 2
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Allah'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).
Sahih al-Bukhari Book 35, Hadith 1 Next Hadith → The 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."
Sahih al-Bukhari Book 35, Hadith 3
Sahih al-Bukhari Book 35, Hadith 1 Next Hadith → The 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."
Sahih al-Bukhari Book 35, Hadith 3