[59]. The first and foremost obligation is to know with certainty that there is no true deity except Allāh. He is the First and the Last, the Alpha and the Omega. He is One without partner, the Creator of the heavens, the earth, and all that lies within and between them. He is the Subtle, the All-Aware, and He has power over all things.
The second obligation is to believe in the Prophet Muhammad ﷺ, and to affirm that Allāh sent him to all of humanity as a bringer of glad tidings, a warner, a caller to God by His permission, and a radiant lamp of guidance.