The ruling on one who swears by other than Allah

Question:
He says: Honorable Shaykh, may Allah grant you success, I hope you will clarify this issue for us. Is it a condition for the one who swears by other than Allah that he believes in it for it to be denounced against him, or is it denounced against him immediately upon the mere utterance?

Answer:
This utterance is blameworthy. As for if he believes in it, then that is shirk (associating partners with Allah). But the mere utterance is blameworthy and shirk, so it is denounced against him. However, if he believes in it with his heart, it does not become minor shirk; it becomes major shirk, may Allah protect us from that. Yes.

Question:
He says: Honorable Shaykh, may Allah grant you success.

Answer:
We do not base matters on the hearts, for no one knows the hearts except Allah. When we hear or see something wrong, it is obligatory for us to denounce it. When we see shirk (associating partners with Allah), it is obligatory for us to forbid it and warn against it. We do not say, "Be patient until you know what is in the heart." No one said this except the ignorant people who have appeared in our time, claiming knowledge, who have fallen into this major issue and have delved into matters of faith and deeds without having any knowledge of them. We ask Allah for safety.