A Thirtieth of the Recitation Cycle

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 Yusuf 12:53 through Ibrahim 14:52. The story of Joseph reaches its reunion and reconciliation, described in the surah as 'the most beautiful of narratives.' It is followed by Ar-Rad ('The Thunder') on the signs of creation and Ibrahim ('Abraham'), which preserves Abraham's prayer for Mecca and its people.

Ar-Rad's meditation on the signs of creation, thunder among them, gives the surah its name, and its description of thunder 'glorifying God's praise' (13:13) became a devotional commonplace cited whenever later Islamic literature treats natural phenomena as forms of worship distinct from human speech. Ibrahim, which follows, preserves Abraham's prayer for the safety and provision of Mecca and its people (14:35-41), a passage tradition connects directly to the sanctuary's continuing sanctity and to the pilgrimage rites later chapters of the Quran set out in fuller detail.