Purity: Ghusl in a Public Bath on Credit

Practical Laws of Islam as per the teachings of Ayatullah Sistani

Ruling 380:

If someone wants to pay on credit for using a public bath without knowing whether or not the owner consents [to this form of payment, but still performs ghusl there], then even if afterwards the owner accepts, his ghusl is void.

-Ayatullah Sistani, Practical Laws of Islam, Purification (Taharah)