وَحَدَّثَنِي مَالِك أَنَّهُ بَلَغَهُ، أَنَّ الْقَاسِمَ بْنَ مُحَمَّدٍ سُئِلَ عَنْ " رَجُلٍ اشْتَرَى سِلْعَةً بِعَشَرَةِ دَنَانِيرَ نَقْدًا أَوْ بِخَمْسَةَ عَشَرَ دِينَارًا إِلَى أَجَلٍ، فَكَرِهَ ذَلِكَ وَنَهَى عَنْهُ " .
Hazrat Qasim bin Muhammad was asked: A person bought something in exchange for ten dinars in cash, or fifteen dinars on credit? So Qasim bin Muhammad considered this bad, and forbade it.