How many compulsory acts (Farz) are required during performative Ritual Purification (Ghusl)?

Explanation

There are 3 Farz (obligatory) actions in Ghusl: 1) Rinsing the mouth thoroughly (Gargling), 2) Sniffing water up the nostrils, and 3) Washing the entire body thoroughly so no single hair’s breadth of skin remains dry. In comparison, Wudu (ablution) contains 4 Farz acts (washing face, washing arms to elbows, wiping head, washing feet to ankles).