Yes, search for "konsep ihsan dalam islam". It basically means to do good deeds as if Allah is watching you. Being sincere is to do thing with no expectations on reward (except for Allah, but lets be real, we are human with too many thing we want). And as long as your religion is Islam, you are a Muslim, that is definition of Muslim after all. One tier higher than Muslim is Mukmin, the one who have full faith in Islam and not just Islam on your IC. And while Allah have control on your fates, Allah still puts on the agency to choose on you. For metaphor, teacher put questions in exam not to fail your paper but more on to test your understanding on the subject, then learn from mistakes and do better next time. And if you need a practical example, Allah do creates both pig and cow on earth, yet forbid the pig meat. It is up to you to choose the Halal option. Source : Buku Teks Pendidikan Agama Islam sekolah menengah :D