Juz' (pl. ajza') literally means part, portion. The Qur'an is divided into 30 portions of approximately equal length for easy recitation during the thirty nights of a month, especially of the month of Ramadan. Usually they are indicated by the word and the number of it given alongside, (e.g. juz' 30 beginning with Sura 78).

Some copies of the Qur'an have the suras divided into paragraphs called ruku'. They are indicated by the symbol and the explanation of the Arabic numerals written with each is as follows, e.g. 2:20:

• The top figure (2) indicates that this is the second completed ruku ' in the respective sura (here Sura al-baqara) .
• The middle figure (13) indicates that this completed ruku' contains 13 ayat.
• The lower figure (2) indicates that this is the second ruku' in the respective juz' (here first juz').

Copies of the Qur'an printed in the Middle East in particular have each juz' subdivided into four hizb indicated by the sign e.g. 2:74 is the beginning of the second hizb of the Qur'an, indicated by the figure 2:

Each hizb is again subdivided into quarters, indicated as follows:

• First quarter of the hizb: XXX
• Half of the hizb: XXX
• Third quarter of the hizb: XXX