How can one accumulate lawful abundant wealth, so as to achieve his religious aspirations and help his parents, with little effort and time, enabling him to dedicate himself to seeking knowledge?

Seeking abundant earnings with little effort is not within the purview of a fatwa. Religious obligations, such as honoring one's parents, serving the faith, and seeking knowledge, are according to one's capacity and ability, as Allah Almighty says: "Allah does not charge a soul except [with that within] its capacity," and "Allah does not charge a soul except [with that] He has given it." A believer is rewarded for their intention, even if the work is not completed. A sincere intention is compensated by Allah for what could not be achieved of the work, and it is more profound than mere action, because the heart is the king of the body.