Jami` at-Tirmidhi 490
جامع الترمذي#490Da'ifKathir bin Abdullah bin Amr bin Awf Al-Muzani narrated from his father, from his grandfather, that :the Prophet said: "On Friday there is an hour in which the worshipper does not ask Allah for anything except that Allah grants it to him." They said: "O Messenger of Allah! Which hour is it?" He said: "When the prayer is begun until it is finished
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirVery Daif
Al-AlbaniVery Daif
Zubair Ali ZaiDaif
In-book reference: 4:3