A juz (plural ajza), also called a para in South Asia, is one of thirty roughly equal divisions of the written Quran. The division is made by length rather than by meaning, so a juz usually begins and ends in the middle of a surah; each is further split into two hizb and each hizb into quarters. Reciting one juz a night completes the whole Quran across a lunar month, a rhythm tied above all to Ramadan, when the entire text is recited in the nightly tarawih prayers. This portion spans Al-Isra 17:1 through Al-Kahf 18:74. It opens with Al-Isra ('The Night Journey') commemorating the Prophet's journey from Mecca to Jerusalem, alongside a code of moral commands. Al-Kahf ('The Cave') then begins with the sleepers of the cave and the enigmatic journey of Moses with the servant of God (Khidr).
Al-Isra's opening verse, commemorating the Prophet's night journey 'from the Sacred Mosque to the Farthest Mosque' (17:1), is the Quranic anchor for the whole later tradition of the Isra and Mi'raj, the night journey and ascension, and the identification of the 'Farthest Mosque,' al-Masjid al-Aqsa, with Jerusalem rather than a symbolic or heavenly location became standard in the earliest extant commentary literature, though the verse itself names no city. Al-Kahf's Companions of the Cave, who follow in the same juz, closely echo the late antique Christian legend of the Seven Sleepers of Ephesus, a resemblance noted since the medieval period and generally read by scholars as evidence of shared late antique storytelling across religious communities rather than direct borrowing in either direction.