The word(s) "friday" appears 3 time(s) in 3 verse(s) in Quran in Mohsin Khan translation.

(1) So, when the Qur'an is recited, listen to it, and be silent that you may receive mercy. [i.e. during the compulsory congregational prayers when the Imam (of a mosque) is leading the prayer (except Surat Al-Fatihah), and also when he is delivering the friday-prayer Khutbah]. (Tafsir At-Tabari).

(2) O you who believe (Muslims)! When the call is proclaimed for the Salat (prayer) on friday (Jumu'ah prayer), come to the remembrance of Allah [Jumu'ah religious talk (Khutbah) and Salat (prayer)] and leave off business (and every other thing). That is better for you if you did but know!

(3) And by the Witnessing day (i.e. friday), and by the Witnessed day [i.e. the day of 'Arafat (Hajj) the ninth of Dhul-Hijjah];