Al-Mukhtasar

بِسْمِ ٱللَّهِ ٱلرَّحْمَـٰنِ ٱلرَّحِيمِ يَـٰٓأَيُّهَا ٱلْمُزَّمِّلُ ﴿١﴾

O you wrapped up in your clothes (i.e. the Prophet (peace be upon him)).