A man holding a deposit who trades with it: whose is the profit?

It is narrated from Ibn Abi Najih that a man asked: If something is left in trust with a man and he puts it into trade? He replied that Ata (may Allah have mercy on him) used to say: Whatever profit is made goes to the owner of the wealth.

And Mujahid (may Allah have mercy on him) said: It goes neither to the owner of the wealth nor to the trustee; rather, it goes to the poor.

Al-Hasan (may Allah have mercy on him) said: Do not put wealth held in trust into business without the permission of its owner. If he does so without permission, he will be liable, and whatever profit he makes will be his.

Ibrahim (may Allah have mercy on him) said concerning wealth held in trust: No liability falls on him unless he moves it from its place or changes it from its condition. If he does change it from its condition and makes some profit, he should give that profit in charity; it belongs to neither of them.

Sayyiduna Ibn Umar (may Allah be pleased with them both) was asked about an orphan's wealth. He said: It remains madmun (subject to liability) until it is returned. It was asked: There is some profit in it as well. He said: Let him do whatever he wishes with the profit, but so long as he has not returned the orphan's wealth, it will remain madmun (subject to liability).

Ibrahim (may Allah have mercy on him) was asked about a man who holds the wealth of orphans: May he use it in trade? He (may Allah have mercy on him) said: If he does so without their permission, he will be liable, and he must give whatever profit is made in charity.