Abdullah bin Abbas (may Allah be pleased with him) narrated that when the Messenger of Allah (peace and blessings be upon him) came to Madinah, people used to conduct Salam transactions in dates for two or three years. The Prophet (peace and blessings be upon him) instructed them that whoever wants to conduct a Salam sale should specify a fixed weight and a fixed period.
Hadith Referenceاللؤلؤ والمرجان / كتاب المساقاة / 1034
Hadith Gradingمحدثین:«صحیح»
Hadith Takhrij«صحیح، أخرجه البخاري في: 35 كتاب السلم: 2 باب السلم في وزن معلوم»