The ruling on not specifying the profit in a partnership contract

Question:
The Shaykh said: If the profit is not specified between them at the beginning, is it something invalid?

Answer:
If the profit is not specified in the contract, it is divided equally between them; because the default in a partnership is equality in entitlement. Allah the Exalted said: Its meaning is that they are equal: if they are ten, each one has one-tenth of the third; if they are five, each one has one-fifth of the third; if they are two, each one has half of the third. So if the partnership is left general between the people, it necessitates equality between the entitled parties. Yes.