What Is a Comma to Al-Hudja?

A comma to al-hudja is a Quranic term by the way. We hear it all the time a comma to Al-Hudja and this is something that Allah as Ojal mentions in many many Verses in Surah Al-Qah verse 134. If we had sent an adab before this Lakhalu they would have said that why didn't they bring to us a sign from the prophets of old? And after hearing the message they choose to reject the message. This is what is called a comma toAl- hudja, which means "to establish evidence" The goal of some of the Prophets was for them to be able to establish