noun. the first pillar of Islam is an affirmation of faith.
1. Verb, past participle The first pillar of Islam is shahadah, which is a belief in the mantra "There is no god but God, and Muhammad is his messenger." 2. Noun, singular or mass Muslims recite shahadah in Arabic; they revere the language because it was the one the Prophet Muhammad spoke and used to write the Quran.