Final answer:
Each volume of the Holy Quran is known as a Juz', which is one of thirty parts that divide the Quran to aid with recitation, especially during Ramadan.
Step-by-step explanation:
The volume of the Holy Quran is known as a Juz'. The Quran is the holy scripture of Islam, and each Juz' is one of thirty equal parts into which the Quran is sometimes divided. This division facilitates Muslims in reading the entire Quran during the month of Ramadan, as they read one Juz' per night. The Quran is further divided into chapters known as Surahs, and each Sura consists of individual verses called Ayat. The Quran is central to the faith and practice of Islam, consisting of the revelations given to the Prophet Muhammad, which were recorded and compiled into the textual format we know today after his death.