[Machine] The Salaf, or the predecessors, are not suitable for wheat, barley, and lentils until they are ground. They are also not suitable for grapes, olives, and similar fruits until they are crushed. Nor is it appropriate to have a gold coin covered in paper or a paper covered in gold.
لَا يَصْلُحُ السَّلَفُ فِي الْقَمْحِ وَالشَّعِيرِ وَالسُّلْتِ حَتَّى يُفْرَكَ وَلَا فِي الْعِنَبِ وَالزَّيْتُونِ وَأَشْبَاهِ ذَلِكَ حَتَّى يُمَجِّجَ وَلَا ذَهَبًا عَيْنًا بِوَرِقٍ دَيْنًا وَلَا وَرِق دَيْنًا بِذَهَبٍ عَيْنًا