Mullá Husayn told him of his search for the possible successor to Kazim Rashti, the Promised One. The Báb claimed this, and to be the bearer of divine knowledge. Mullá Husayn became the first to accept the Báb's claims to be an inspired figure and a likely successor to Kazim Rashti. The Báb had replied satisfactorily to all of Mullá Husayn's questions and had written in his presence, with extreme rapidity, a long tafsir, commentary, on surah "Yusuf", known as the Qayyúmu'l-Asmáʼ and considered the Báb's first revealed work. It has been adopted as a Baháʼí Holy Day. Letters of the Living Mullá Husayn became the Báb's first disciple. Within five months, seventeen other disciples of Kazim Rashti recognized the Báb as a Manifestation of God. Among them was a woman, Fátimih Zarrín Táj Barag͟háni, a poetess, who later received the name of Táhirih, the Pure. These 18 disciples later became known as the Letters of the Living (each soul containing one letter of the Spirit of God, which combine to form the Word) and given the task of spreading the new faith (understood as the return or continuation of the one Faith of Abraham) across Iran and Iraq. The Báb emphasized the spiritual station of these 18 individuals, who, along with himself, made the first "Unity" of his religion according to the Arabic term wāḥid, unity, that has a numerical value of 19 using abjad numerals. The Báb's book, the Persian Bayán, gives the metaphorical identity of the Letters of the Living as the Fourteen Infallibles of Twelver Shiʿi Islam: Muhammad, the Twelve Imams, and Fatimah, and the four archangels, paralleling the first followers of Christ. Travels and imprisonment After the eighteen Letters of the Living recognized him, the Báb and Quddús left on a pilgrimage to Mecca and Medina, the sacred cities of Islam. At the Kaaba in Mecca, the Báb publicly claimed to be the Qa'im, and wrote to the Sharif of Mecca, the Custodian of the Kaaba, proclaiming his mission. After their pilgrimage, the Báb and Quddús returned to Bushehr, where they last saw each other. Quddús' travel to Shiraz brought the Báb's claim to the attention of the governor, Husayn Khan, who tortured Quddús and summoned the Báb to Shiraz in June 1845. The Imam-Jum'ih of Shiraz questioned Báb about his claims. He denied that he was the representative of the Qá'im or an intermediary