Is it permissible to explain the corrupting effects of man-made laws in Arab countries, while indicating that legislation in personal status matters cannot be fragmented, and that denunciation is obligatory?

Clarifying the corruptions of man-made laws and advocating for the superiority of Islamic Sharia falls under the category of calling to Allah. This includes the impermissibility of fragmenting the rulings of Sharia by believing in some and disbelieving in others. One who undertakes this effort with sincerity (seeking reward from Allah) is engaged in a great good. It is advised to exert effort in studying Sharia before embarking on this task, in accordance with His, the Almighty's, saying: "Say, 'This is my way: I invite to Allah with insight, I and those who follow me,'" and His, the Almighty's, saying: "And thus do We explain the verses in detail, and so that the way of the criminals will become clear."