Hadith Limiting Quran
Every directive in its applications needs specifications. For example, we are asked to sacrifice an animal in the way for God. We have to select an animal. We decide it should be a good one as it is an offering to God Almighty. Now comes the specifications that how good it should be and what is not good that should be avoided. God has told us not to be extravagant. Now we have to decide what amount according to our standards is spendthrift and what is not. Now we are specifying a directive. This is an integral part of a directive when comes to application. When the prophet suggests it, it is still the same. But since it is suggested by the prophet it has its own value.