Is there any specific act in Sharia that was permissible or a sin and then its ruling changed to become disbelief (kufr) that expels one from Islam? And what is the meaning of Imam Al-Qarafi's statement: "It is impossible, in Allah's custom, for Him to command what is disbelief in some instances; due to His saying, 'And He is not pleased with disbelief for His servants' [Qur’an 39:7], meaning: He does not legislate it as a religion. And its meaning is that an act containing the corruption of disbelief is not permitted or legislated, so it cannot be said: Allah legislated that. And the reality of disbelief in itself is known before the Sharia and is not derived from the Sharia, nor does its reality become invalidated by the Sharia, nor does it become other than disbelief"? And is it true that disbelief cannot be subject to abrogation (naskh) because there is no abrogation in matters of promise and warning?

Apostasy that expels one from the fold of Islam is not subject to abrogation or alteration, for all divine laws agree on the prohibition of disbelief, and it is also intellectually forbidden. The objectives of Islamic law are based on preserving the five necessities (religion, life, intellect, progeny, and wealth). Everything that entails their preservation is a benefit (maslahah), and everything that undermines them is a corruption (mafsadah). No religion or law can be devoid of prohibiting that which undermines these fundamental principles. As for prostrating to other than Allah, the difference between what is considered disbelief and what is not lies in intention and belief. Prostrating to an idol is considered disbelief because it involves the belief that they are gods or partners with Allah. In contrast, prostrating to parents or scholars out of veneration and humility, without believing in their divinity, is not disbelief, but it is forbidden as a preventative measure (sadd al-dhari'ah). Prostration as a form of greeting was permissible in previous nations for Adam and Yusuf (peace be upon them), but it was abrogated in our Sharia, and bowing to a created being has been forbidden. It is not considered disbelief unless it is intended as an act of worshipful prostration or to venerate the created being as one would venerate Allah the Almighty.