Ruling 2241
If a worker performs the task before or after the contract is concluded with the intention of not taking any money, he does not have the right to claim any fee.
-Ayatullah Sistani, Practical Laws of Islam, Reward (Juʿalah)
Reward: Performing a Task Without the Intention of Taking a Fee
Practical Laws of Islam as per the teachings of Ayatullah Sistani
