YAʿSŪB (يعسوب‎). Lit. “A prince or chief.” The King of the Bees. A title given to ʿAlī. (Majmaʿu ʾl-Biḥār, vol. iii. p. 502.) A name of one of Muḥammad’s horses. (Richardson’s Dictionary.)

YATHRIB. [[YASRIB].]

YATĪM (يتيم‎). [[ORPHAN].]

YAUM (يوم‎). A day of twenty-four hours; pl. aiyām. In contradiction to lail wa nahār, “night and day.”

The seven days of the week are known as:

YAUMU ʾD-DĪN (يوم الدين‎). “Day of Judgment.”

[Sūrah i. 4]: “The King of the Day of Judgment.”

[Sūrah lxxxiii. 17]: “What shall make thee know what the Day of Judgment is?”

AL-YAUMU ʾL-ĀK͟HIR (اليوم الاخر‎). “The Last Day.” A name given in the Qurʾān to the Day of Judgment.