There is no contradiction between not declaring a disbeliever to be an infidel (out of ignorance or misinterpretation) and committing an act of apostasy. It does not mean that because they did not declare the disbeliever an infidel, they approved of his act of disbelief, or that they did not disavow his act, or deny it, or hate it. Rather, they did not declare him an infidel due to their ignorance of the religious ruling, while disavowing his act and hating and denying it. Thus, they did not fall into apostasy.

3. Declaring someone an infidel is a religious ruling. Those who were ignorant of the disbelief of a ruler who replaced God's law with man-made laws, due to a doubt that arose in their understanding of some religious texts, diverting them from their apparent meaning, or did not declare them infidels due to their ignorance of the principles of Sharia, or their ignorance of the reality of the disbelief of the replacing rulers, or their ignorance of the rulings of apostasy (conditions, pillars, and impediments of apostasy), then these individuals cannot be declared infidels as long as this did not lead them to apostasy by supporting the replacing ruler, such as supporting the laws of disbelief, or participating in their legislation, or swearing to respect them and to be loyal to them, or assisting their people in establishing and implementing them, or supporting the replacing ruler and his soldiers against the monotheists who support Sharia and disavow man-made laws, or justifying any of this, or finding it acceptable.

Thus, the claim that a Muslim's failure to declare a disbeliever an infidel (out of ignorance or misinterpretation) necessitates apostasy is proven false.

I ask God Almighty to guide us all to the truth and to the straight path. Praise be to God, Lord of the worlds. And may God's blessings be upon Muhammad, his family, and his companions, and grant them peace.