Shaykh al-Tusi, Sayyid Ibn Tawus, al-Kaf`ami, and Sayyid Ibn Baqi have recorded that it is recommended to say the following prayer on Fridays and at Friday nights and on the day and night of `Arafat (the ninth of Dhu’l-Hijjah).The supplication below is as quoted from Shaykh al-Tusi’s book of al-Misbah