Hiring/Renting: Responsibility for a Destroyed Rented Item
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 2209
If the rented item is destroyed, the lessee is not responsible (ḍāmin) for it as long as he was neither negligent in safeguarding it nor excessive in using it. Similarly, if, for example, the cloth given to a tailor is destroyed, the tailor is not responsible for it as long as he was neither negligent in taking care of it nor excessive in using it.
-Ayatullah Sistani, Practical Laws of Islam, Hiring/Renting (Ijarah)