Is the prohibition of running to the mosque after the Iqamah to be understood as one of disliking (Karahah) or of absolute prohibition (Tahrim), and what is the wisdom behind that?

It is disliked to rush when the prayer is called, and it is recommended to walk to it with tranquility and dignity, as the Prophet (peace and blessings be upon him) said: "When the prayer is called, do not come to it rushing, but come to it walking, with tranquility upon you." This is because the one going to prayer is considered to be in the state of prayer, and he should observe its etiquette from the moment he intends to go to it.