Taqlid: A mukallaf must learn the rulings they likely need to avoid sin—meaning neglecting obligations or committing prohibitions.

Practical Laws of Islam as per the teachings of Ayatullah Sistani

Ruling 9

It is necessary for a mukallaf to learn those rulings that he considers he probably needs to learn in order to avoid sinning. ‘Sinning’ means not performing obligatory acts or performing unlawful acts.

- Ayatullah Sistani, Practical Laws of Islam, Following a Jurist (Taqlid)