Al-Mukhtasar

بِسْمِ ٱللَّهِ ٱلرَّحْمَـٰنِ ٱلرَّحِيمِ لِإِيلَـٰفِ قُرَيْشٍ ﴿١﴾

Because of the habit of the Quraysh and their acquaintance.