89:2
وَلَيَالٍ عَشْرٍ
walayālin ʿashrin
And [by] ten nights
— Saheeh International
by the Ten Nights,
— M. A. S. Abdel Haleem
By the ten nights (i.e. the first ten days of the month of Dhul-Hijjah),
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali