There is a verse in the Qurʾān which completely eradicates the claim of the kufrī doctrine that is called the Abrahamic House [of Worship]

There are hands working to snatch you away from Tawḥīd and Islām to disbelief and atheism. From chastity and virtue to degeneracy and depravity.

ʿAlī bin al-Ḥusayn used to [appear] miserly, but when he died, they found that he was providing for a hundred households in Madīnah.

The Salaf used to seek knowledge for the sake of Allāh, and they were ennobled and then became Imāms of Guidance, by whom the people guided themselves.

Khurūj (revolt) is not allowed. And these evidences that they have used are actually against the one who uses them.

Some factions are greater in their opposition to the Messenger than others, and others are more apparent in their opposition [than others].

If we were to say that there is no rejection to be shown in issues of difference in an unrestricted manner, then the religion as a whole would disappear...

If the person intends the issues of differing (khilāf) [that no rejection is shown towards them], then this is false, it opposes the consensus of the ummah.

The issues of khilāf are broader than the issues of ijtihād and it is permissible to differ in the issues of ijtihād where there is more than one view being supported by evidence.

Emotions have a great effect on weakening a person. So sometimes the healthy person might think he is ill and thus becomes ill.