English translation
2240. Narrated Ibn 'Abbās رضي الله عنهما: The Prophet ﷺ came to Al-Madina 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 known specified measure, at known specified weight, for a known specified time-period," Narrated Ibn Abī Najīh as above, saying, "He should pay the price in advance for a known specified measure and for a known specified time-period."
