The Rub El Hizb (Arabic: رب الحزب) is an Islamic symbol which is found on a number of emblems and flags. In Arabic, Rub means lord, sustainer, provider, supporter, nourisher, sovereign, ruler, master, or protector, while Hizb means a group, party, or sect.
The Rub El Hizb is an eighth of a juz'. The symbol is used as a marker for the end of a chapter in Arabic calligraphy. It is represented by two overlapping squares as in the Unicode glyph ۞ at U+06DE.
The Rub El Hizb can be seen on:
The cross-sections of the Petronas Twin Towers are based on the Rub el Hizb, but with extra circular sectors added to increase the total floor space.