Hazrat Ibn Umar (may Allah be pleased with both of them) says regarding the person who hires a laborer and then gives him on hire to someone else for a higher wage, that the excess will go to the first person.

Hazrat Ibn Umar (may Allah be pleased with them both) used to dislike this.

Ibrahim says that if a person rents a house and then rents it out to someone else for a higher rent, the excess amount should be returned.

It is narrated from Hazrat Saeed bin Al-Musayyib, Hazrat Abu Salamah bin Abdur Rahman, Hazrat Urwah bin Zubair, and Hazrat Sulaiman bin Yasar that if a person rents a house and then rents it out to someone else at a higher price, two of these individuals permitted it and two disliked it.

Hazrat Mujahid says that do not take extra payment on a house or animal that has been rented.

Hazrat Iyas bin Mu'awiyah, may Allah have mercy on him, said that when you rent a shop or a slave, do not rent it out for more than the rent you have paid.

Hazrat Shahr bin Hawshab disliked that a person would rent something and then lease it out to someone else for a higher rent.

Hazrat Ikrimah says that this is forbidden.

Ibrahim says that this is usury.

A person asked Hazrat Zuhri whether someone could rent something and then rent it out to another for a higher rent. He saw no harm in it. Later, when I asked him again, he disliked it.