Sahih al-Bukhari 2239
Book 35: Sales in which a Price is paid for Goods to be Delivered Later (As-Salam) · Hadith 1
Hadith text
Narrated Ibn `Abbas: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)
Ibn Abbas (رضی اللہ عنہما) bataate hain: Allah ke Rasool Madina aaye aur log phalon ki qeemat pehle se ada karte the jinhe ek ya do saal ke baad delivery honi hoti (raawi ko shak hai ke yeh ek-do saal tha ya do-teen saal). Nabi ne kaha: "Jo koi khajoor (baad mein delivery ke liye) ka paisa pehle deta hai, use jaani-pehchani, muqarrar naap aur wazan ke liye dena chahiye."
Sahih al-Bukhari 2239 · Book 35, Hadith 1