Al-Adiyat or The War Horses which run swiftly[1] (Arabic: العاديات, al-ʿādiyāt, also known as "The Courser, The Chargers") is the 100th chapter (sūrah) of the Qur'an, with 11 āyāt or verses.

Regarding the timing and contextual background of the revelation (asbāb al-nuzūl), it is an earlier "Meccan surah", which means it is believed to have been revealed in Mecca, rather than later in Medina.

وَٱلْعَٰدِيَٰتِ ضَبْحًا ۝١‎ By the racers, panting, فَٱلْمُورِيَٰتِ قَدْحًا ۝٢‎ And the producers of sparks (when) striking فَٱلْمُغِيرَٰتِ صُبْحًا ۝٣‎ And the chargers at dawn, فَأَثَرْنَ بِهِۦ نَقْعًا ۝٤‎ Stirring up thereby (clouds of) dust, فَوَسَطْنَ بِهِۦ جَمْعًا۝٥‎ Arriving thereby in the center collectively, إِنَّ ٱلْإِنسَٰنَ لِرَبِّهِۦ لَكَنُودٌ ۝٦‎ Indeed mankind, to his Lord, is ungrateful.

But the subject matter of the Surah and its style clearly indicate that it is not only Makki, but was revealed in the early stage of Makkan period.

[3] Abdullah bin Masud, Jabir, Hasan Basri, Ikrimah, and Ata say that it is Makki.