Is what the partner did permissible, exploiting company funds for his personal benefit, procrastinating in repaying debts, breaking covenants, refusing arbitration or taking an oath, and is his action considered deception?

It is not permissible for a partner to betray their associate or to procrastinate in fulfilling their obligations, for the Messenger of Allah, peace and blessings be upon him, said: "The procrastination of the rich is injustice." Covenants, agreements, and promises must be fulfilled, for Allah, the Exalted, said: "O you who have believed, fulfill [all] contracts" and "And fulfill [every] covenant. Indeed, every covenant will be questioned about." The Messenger of Allah, peace and blessings be upon him, warned against breaking promises and considered it one of the characteristics of hypocrisy. In matters of disputes, it is advisable to resort to judicial arbitration.