Purity: Purification of Wine by Transformation into Vinegar (Change)

Practical Laws of Islam as per the teachings of Ayatullah Sistani

Ruling 192

If wine turns into vinegar by itself or by pouring something like vinegar or salt into it, it becomes pure. This is called ‘change’.

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