Does deprivation of knowledge —due to sins— include worldly and religious knowledge, or only religious knowledge? And does the intention to remove the deprivation of knowledge through repentance affect a servant's sincerity?

The most noble and beneficial of sciences is the Islamic legal science (Shariah). Sins can be a cause for forgetting worldly knowledge or not benefiting from it, and a barrier between the servant and quick acquisition and understanding. They are the cause of every calamity that befalls a servant. Sincere repentance removes the effects of sins in this world and the hereafter. If a servant repents with the intention of avoiding the harmful effects of sins, while being sincere to Allah, then their repentance is valid. However, if their repentance is merely for the sake of obtaining worldly benefits, they will not be rewarded for it.