Is it permissible to be optimistic about a particular bag, given that whenever it is carried, it is never without money, despite the certainty that Allah is the Provider?

Optimism is permissible; it is having a good opinion of God and hoping for good from Him. The Prophet, peace and blessings be upon him, clarified that optimism is "the good and pleasant word" or "the righteous word that one of you hears," and he likes to hear "O Rashid (rightly guided), O Najih (successful)." However, one should not be optimistic about a bag or anything else, as it has no special merit over others. What is mentioned about money never being without it might be due to other reasons. Optimism regarding it could lead to ill omens with other things, causing a person to fall into what is forbidden, even if they believe that God is the Provider. This is because the fundamental principle is to rely on God, ask Him for good, and seek refuge in Him from evil.