Does knowledge have limits in religion, and will it cease at certain things it cannot do? And can knowledge reach the point of creating a smart robot like a human, or are there limits to knowledge as mentioned in the Holy Quran by the example of the mosquito?

Human knowledge has limits that it cannot surpass, for it is little, as stated in the Quran. The more science develops, the more questions arise for which humans find no answers. This highlights the vast chasm between human knowledge and the visible and invisible cosmos. Even the human body reveals the wonders of creation and the complexity of its system.

As for replacing humans with machines in factories, this does not represent an تجاوز (overstepping) of human capabilities, nor does it come close to the creation of humans themselves or living beings. Even a fly, creatures cannot create. Allah Almighty said: "O mankind, an example has been presented, so listen to it. Indeed, those whom you invoke besides Allah will never create [as much as] a fly, even if they gathered together for it. And if a fly should steal something from them, they would not be able to retrieve it from him. Weak are the pursuer and pursued. They have not appraised Allah with true appraisal. Indeed, Allah is Powerful and Exalted in Might."