حَدَّثَنَا مُحَمَّدُ بْنُ كَثِيرٍ، أَخْبَرَنَا سُفْيَانُ، عَنْ أَبِي إِسْحَاقَ، عَنْ رَجُلٍ، نَجْرَانِيٍّ عَنِ ابْنِ عُمَرَ، أَنَّ رَجُلاً، أَسْلَفَ رَجُلاً فِي نَخْلٍ فَلَمْ تُخْرِجْ تِلْكَ السَّنَةَ شَيْئًا فَاخْتَصَمَا إِلَى النَّبِيِّ صلى الله عليه وسلم فَقَالَ ‏"‏ بِمَ تَسْتَحِلُّ مَالَهُ ارْدُدْ عَلَيْهِ مَالَهُ ‏"‏ ‏.‏ ثُمَّ قَالَ ‏"‏ لاَ تُسْلِفُوا فِي النَّخْلِ حَتَّى يَبْدُوَ صَلاَحُهُ ‏"‏ ‏.‏

Narrated Abdullah ibn Umar: A man paid in advance for a palm-tree. It did not bear fruit that year. They brought their case for decision to the Prophet (PBUH). He said: for which do you make his property lawful? He then said: Do not pay in advance for a palm-tree till they (the fruits) were clearly in good condition. Translation Not Available

Book Ref: Sunan Abi Dawud Book 24 Hadith 3467
Web Ref:  Sunan Abi Dawud Book 23 Hadith 3460