1156. Abu Hurairah (May Allah be pleased with him) reported: The Messenger of Allah (sal Allahu alaihi wa sallam) said while talking about the merits of Friday, “There is a time on Friday at which a Muslim, while he (or she) is performing Salat and is supplicating, will be granted whatever he (or she) is supplicating for.” And he (sal Allahu alaihi wa sallam pointed with his hand to indicate that this period of time is very short. [Al-Bukhari and Muslim]
Commentary: This Hadith mentions another distinction of Jumu`ah, namely a moment in which every prayer that a person then makes is granted with the condition that what one is asking for is good and lawful. It is a very short moment and its time has also not been revealed. For this reason one should remember Allah frequently and pray to Him on Jumu`ah so that one attains that moment when prayers are answered. Prayers can also be answered outside Salat if one happens to be supplicating at the specified moment.
It is recommended to supplicate Allah (subhana wa ta’ala) much on Fridays, seeking the moment when prayers are answered. Some scholars believe this time lies between the time the Imam first sits on the pulpit and when the prayer finishes. Others hold that the moment occurs after the midafternoon (Asr) prayer to Maghrib.