How many types of I'tikaf (Etikaf) are there?

اعتکاف کی کتنی اقسام ہیں؟

None of these

I'tikaf has three types: Sunnah I'tikaf (last 10 days of Ramadan), Nafl I'tikaf (optional at any time), and Wajib I'tikaf (vowed or obligatory).

It is a spiritual retreat in the mosque for worship and devotion to Allah.