Is the repentance of disbelievers achieved through their Islam?

Question:
He says: Honorable Shaykh, may Allah grant you success. He says: You mentioned, may Allah preserve you, that if disbelievers repent, Allah the Exalted will accept their repentance. So how is the repentance of disbelievers? Is it through their Islam?

Answer:
Well, is their repentance anything other than through their Islam? If they testify that there is no god but Allah and that Muhammad is the Messenger of Allah, then Allah will accept their repentance. But if they do not testify that there is no god but Allah, even if they acknowledge that Allah is the Lord and that Allah is [the only one], but they do not utter this, or if they acknowledge the message of Muhammad (peace and blessings be upon him) but do not utter that, this does not benefit them. It is necessary to utter it, and it is necessary to believe in it as well, and it is necessary to act upon it if they are able to act upon it. Yes.