This is the 2730th most frequent German word.
hierfür
"For this" or "for that."
In this sentence, 'hierfür' refers to the requirement of a permit for a particular purpose specified or implied earlier.
Hierfür benötigst du eine Genehmigung.
For this, you need a permit.
Here, 'hierfür' is used to point towards the need for a reason, directly linking to a previously stated matter.
Ich habe keinen Grund hierfür.
I have no reason for this.
In this case, 'hierfür' is indicating a relation to previous information that might require evidential support.