كتاب البيوع
7  
Business Transactions
Muslim has:
"He gave permission regarding al-'Araya (for its sale) in which the household buys its fruit on the basis of a calculation (of what the dates would be when dry), yet they could eat them fresh (from the tree).
وَلِمُسْلِمٍ: { رَخَّصَ فِي اَلْعَرِيَّةِ يَأْخُذُهَا أَهْلُ اَلْبَيْتِ بِخَرْصِهَا تَمْرًا، يَأْكُلُونَهَا رُطَبًا } 1‏ .‏


‏1 ‏- مسلم ( 1539 )‏ ( 61 )‏.‏

Sunnah.com reference : Book 7, Hadith 82
English translation : Book 7, Hadith 0
Arabic reference : Book 7, Hadith 847