The amount of wages for one who performs work without a prior agreement on the lease

Question : And he saw the cars. So he says to him, there is such and such in them. And whatever happened in them. And he does not seek healing except from Allah.

Answer : It is valid. Anyone who prepares himself for work, whether a washer, a cleaner, or others, there is no harm in contracting with him without specifying the wage, and he is entitled to a wage because he has prepared himself for this work.