Is selling air conditioners in installments at a fixed price, and contributing shares worth 1000 Riyals to distribute fixed profits based on sales, considered haram or usury?

There is no objection to selling on credit with an increase in price, nor to Mudarabah (definition) (profit-sharing) according to Islamic law, where the capital owner gives a portion of his wealth to someone to trade with it, on the condition that the profit is shared between them according to a mutually agreed upon percentage. If the worker contributes with both his money and his labor, it is a permissible partnership (Sharikah (definition)), provided that the capital of each partner is known and that any equipment he possesses is appraised before his participation.