Does speculation become void if the owner of the capital does not attend the monthly distribution of the profit sent to him, and what is the ruling on Islamic banks that deposit profits into the customer's account without the customer attending the distribution?

Mudarabah (definition) is a contract between two parties where one provides capital to the other to trade with, and the profit is shared between them according to their agreement. The presence of the capital provider is not required for calculating and distributing profits or losses; rather, their presence is sufficient for the validity of the distribution, or their permission to the agent is enough. The capital provider's authorization for the Mudarib (agent) to undertake the profit distribution is sufficient. Thus, an Islamic bank is permitted to distribute profits and deposit them into the investor's account.