One of the perfections of this religion is that it is based on straight principles and consistent principles, which do not break and nothing deviates from them, and this is from the mercy of God Almighty towards the nation. Because it is impossible or impossible to comprehend every text and part, so if it is possible to have general principles to which the details can be attributed, this would be a great blessing that will make the nation safe from misguidance, God willing. This is one of the aspects of His gratitude to God Almighty for completing the religion. Paying attention to the general principles and general rules is a matter whose importance is not hidden, as it is the way to controlling and ruling knowledge, since the particulars - as mentioned above - are traced back to the fundamentals, so if the ruling of the particulars is hidden, they are returned to their origin and given its ruling.
The door of destiny has special importance, which lies in the following:
Being a pillar of faith.
It is the subject of great attention in the texts of the Qur’an and Sunnah.
It is one of the chapters in which the disagreement between the Sunnis and those who oppose them has become intense.
It has a significant and direct impact on the behavior of a Muslim in all circumstances.
In this application, there is a presentation of these comprehensive rules in the chapter on destiny, indexing each rule separately. The application works without the Internet, its size is very small, and it has a copy feature because it is in a comprehensive format.