Prayer (Kitab Al-Salat): Details of Commencing Prayer
Dawud :: Book 3 : Hadith 1043
Narrated Jabir ibn Abdullah:
The Prophet (peace_be_upon_him) said: Friday is divided into twelve hours. Amongst them there is an hour in which a Muslim does not ask Allah for anything but He gives it to him. So seek it in the last hour after the afternoon prayer.