Of its own self the ground bears fruit gradually, first the grass - blade, then the stalk head, finally the full grain in the head.
عَلَى سَبِيلِ ٱلْمِثَالِ ،‏ قَدْ تَحُدُّ ٱلشَّيْخُوخَةُ أَوِ ٱلْمَرَضُ ٱلْمُوهِنُ مِمَّا يُمْكِنُ لِلْبَعْضِ ٱلْقِيَامُ بِهِ فِي عَمَلِ ٱلْكِرَازَةِ .‏