Is one who hears shirk (associating partners with Allah) phrases, such as swearing by other than Allah, and does not denounce them, considered one who conceals knowledge?

Question:
Honorable Shaykh, may Allah grant you success. Is one who hears shirk (associating partners with Allah) phrases, such as swearing by other than Allah, and does not denounce them because these phrases are frequently repeated, considered one who conceals knowledge?

Answer:
Anyone who conceals any part of the knowledge that people need is a concealer, and this varies depending on the issues. Yes. Unless he is unable to do so, in which case he is excused. Yes. Or if what he did not inform them of would lead to a religious danger if he clarified it, then he conceals it, as in the hadith: "Do not inform them, lest they become negligent." The Prophet (peace and blessings be upon him) said to Mu'adh: "Do not inform them, lest they become negligent," meaning they will take the side of hope and abandon the deeds. So if clarification leads to a greater danger, then concealing is permissible. Yes.