قَالَ مَالِكٌ : وَأَمَّا كُلُّ شَيْءٍ كَانَ حَاضِرًا يُشْتَرَى عَلَى وَجْهِهِ مِثْلُ اللَّبَنِ إِذَا حُلِبَ، وَالرُّطَبِ يُسْتَجْنَى، فَيَأْخُذُ الْمُبْتَاعُ يَوْمًا بِيَوْمٍ، فَلَا بَأْسَ بِهِ، فَإِنْ فَنِيَ قَبْلَ أَنْ يَسْتَوْفِيَ الْمُشْتَرِي مَا اشْتَرَى رَدَّ عَلَيْهِ الْبَائِعُ مِنْ ذَهَبِهِ بِحِسَابِ مَا بَقِيَ لَهُ، أَوْ يَأْخُذُ مِنْهُ الْمُشْتَرِي سِلْعَةً، بِمَا بَقِيَ لَهُ يَتَرَاضَيَانِ عَلَيْهَا، وَلَا يُفَارِقُهُ حَتَّى يَأْخُذَهَا، فَإِنْ فَارَقَهُ، فَإِنَّ ذَلِكَ مَكْرُوهٌ لِأَنَّهُ يَدْخُلُهُ الدَّيْنُ بِالدَّيْنِ، وَقَدْ نُهِيَ عَنِ الْكَالِئِ بِالْكَالِئِ، فَإِنْ وَقَعَ فِي بَيْعِهِمَا أَجَلٌ فَإِنَّهُ مَكْرُوهٌ وَلَا يَحِلُّ فِيهِ تَأْخِيرٌ وَلَا نَظِرَةٌ، وَلَا يَصْلُحُ إِلَّا بِصِفَةٍ مَعْلُومَةٍ إِلَى أَجَلٍ مُسَمًّى، فَيَضْمَنُ ذَلِكَ الْبَائِعُ لِلْمُبْتَاعِ، وَلَا يُسَمَّى ذَلِكَ فِي حَائِطٍ بِعَيْنِهِ، وَلَا فِي غَنَمٍ بِأَعْيَانِهَا. ¤
Imam Malik, may Allah have mercy on him, said that if it is stipulated with the buyer that he may take as much milk as is drawn daily, or as much fruit as is picked daily, then it is permissible for him to take it every day. If the quantity purchased is not fully delivered, such as if the milk ceases or the fruit is destroyed, then the seller shall return to the buyer the price for what remains, or the buyer may take something else from the seller in exchange for it. However, it is not permissible for the buyer to leave the seller without taking anything; otherwise, it will be disliked, because this is a sale of one thing for another deferred, and the Messenger of Allah, peace and blessings be upon him, forbade this.