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 ﷺ. 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.

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 ﷺ فَقَالَ " بِمَ تَسْتَحِلُّ مَالَهُ ارْدُدْ عَلَيْهِ مَالَهُ " . ثُمَّ قَالَ " لاَ تُسْلِفُوا فِي النَّخْلِ حَتَّى يَبْدُوَ صَلاَحُهُ " .