These are the 6 levels on understanding knowledge.
1. True Knowledge
To understand something in its reality, from its proofs, with certainty and without doubt
• Allah
• Prayer
• Muhammad (saw)
2. Al jahlul baseet, slight ignorance.
To know something in detail but may have a slight aspect about it that he is ignorant about
• Badr. He knows it happened, where it happened who were the two parties, but doesn’t know for example the number of Muslims who participated, or doest know its exact date, but with a little extra studies will reach full understanding.
3. Al Jahlul Murakkab, compounded ignorance.
This is ignorance built upon ignorance, that is knowing something that can never be true.
Knowledge that is completely wrong and in opposition to the truth
Example
• He believes that n inheritance the grandfather is entitled to half the wealth
• A person who divorces his wife can remarry over and over because he thinks with every re marriage he gets all his 3 divorces back
4. Ash-Shakk, doubt.
But this doubt is a doubt of 50 / 50. He believes that one thing it true, yet there is something that opposes this with another thing that he believes is true.
he believes the wrong can be right, or the right wrong, he’s someone stuck in the middle, and in our deen there is no room for shakk
We do not act on shakk.
• A person says there is a 50 50 possibility that the sun have set, it could be up or down, in this case this person if he was fasting does not break the fasting nor pray the meghrib prayer
5. Dhuun, suspicion.
This is having understood something, but there is a small suspicion that there is something that opposes it. Something less likely to be true, 80% true but suspect 20% could be there
Example
• You live in a valley, you are sure that the sun has set, your positive, but then you start having some suspicion, is it or not, here the facts out weigh the suspicion, so you break your fast and pray
• A person who made wudu, and he is certain he has made wudu, but then he has Dhun, did I break my wudu or not…… here we say doubt does not overrule certainty, so pray and don’t make wudu
6. Al-Wahn, delusion.
This is having absolutely no daleel, difference of opinion, nothing, wahn is knowing something that you know there is clear evidence that you shouldn’t be doing that thing.
These were the levels for the Muslim regarding the levels of knowledge
Just to add, regarding ignorance there is what is called, jahlul kamil, total or complete ignorance and this is only for the kaffir.
The most important thing to re established is that knowledge and understanding can only be obtained prom the correct sources The Quran and sunnah.