Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) mentioned the day of Friday: "In it there is an hour which, if a Muslim servant coincides with it," and in the narration of al-Shafi'i (may Allah have mercy on him): "a Muslim person is praying at that hour and asks Allah, Allah will surely grant it to him." And the Prophet (peace and blessings be upon him) gestured with his hand, indicating that it is very short.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5998