The proofs which are introduced to establish Wilayat al-Faqih are classified as: intellectual [‘aqli] and transmitted [naqli]. It is worth noticing that the Shi‘a ‘ulama believe that in proving a religious injunction, we can make use of four types of proofs:

The Qur’an

Sunnah of the Infallibles (A)

Consensus [Ijma‘]

Reason [‘Aql].

AYATOLLAH MISBAH YAZDI (R)