Which pillar of Islam is referred to as the declaration of faith?

Explanation

– Shahada is the testimony of faith, declaring that there is no god but Allah and Muhammad (PBUH) is His messenger.
– It is considered the gateway to Islam, as its sincere recitation is what formally admits a person into the faith.
– For exams, note that Shahada is the only pillar that requires no specific time, condition, or physical action to fulfill.