Indeed, to this splendid statement belong excellent virtues and innumerable distinctions. It is the best, most virtuous, and the greatest of all statements. For its cause, the creation was created, messengers sent, and books were revealed. By this declaration, mankind was separated into believers and disbelievers; joyous dwellers of paradise and wretched dwellers of Hellfire. So it is the most trustworthy handhold that will never break, the statement of piety, the greatest of all pillars of religion, and the largest of the branches of faith.
Moreover, it is the path of attaining Paradise and salvation from the Fire. It is the statement of testimony, the key to the Home of Bliss, and salvation from the Hellfire. It is the foundation of the religion and the pinnacle of its matters. The virtue of this statement and its lofty position in the religion is above what anyone could describe or fully grasp.
Allāh said: “Allāh bears witness that Lā Ilāha Illā Huwa (none has the right to be worshipped but He), and the angels, and those having knowledge (also give this witness); (He always) maintains His creation in Justice. Lā Ilāha Illā Huwa (none has the right to be worshipped but He), the All-Mighty, the All-Wise.” [Sūrah Āli Imran 3:18]
From amongst the mentions of the virtues of this statement in the Noble Qur’ān: Allāh made it the core call of the prophets and the essence of their message.