Shaykh Abdurragmaan Khan makes clear the rulings on thinking thoughts unbefitting of Allah.
If someone were to bring to his mind the sentence “the Almighty has children.” At the same time he hates it and is disgusted by it, and doesn’t believe it or doesn’t hold that thought to be true because he is a Muslim by birth.
Don’t confuse with waswasa in the sense that it is not an unsolicited or unbidden thought, but with his own will he brings it to mind just like with his own will he imagines a green tree.
Would that be considered deliberately bringing kufr thoughts to mind and thus nullify his Islam?
Thank you for your question.
Intentionally drawing these thoughts to mind, while detesting them does not tantamount to disbelief. If your intention by drawing such thoughts to mind is to develop responses for them, or to break them down, then it may be praiseworthy. However, if this is not the case, it’s best that you refrain from doing so.
And Allah knows best.
Checked and approved by Shaykh Faraz Rabbani.