Sahih Bukhari
Friday Prayer
Volume: 002 / Book Number: 013 / Hadith Number: 16
Narrated Abu Huraira:
The Prophet used to recite the following in the Fajr prayer of Friday, "Alif, Lam, Mim, Tanzil" (Surat-as-Sajda #32) and "Hal-ata-ala-l-Insani" (i.e. Surah-Ad-Dahr #76).