The Messenger of Allah ﷺ said, "The sun has neither risen nor set upon a day better than Friday. Allah guided us to it, while the people were led astray from it. The people follow us in this regard, so it belongs to us. The Jews have Saturday, and the Christians have Sunday. In it is an hour during which no believing servant stands in prayer asking Allah for anything except that He grants it to him."
قال رسول الله ﷺ: ما طلعت الشمس ولا غربت على يوم خير من يوم الجمعة، هدانا الله له، وأضل الناس عنه، والناس لنا فيه تبع، فهو لنا، واليهود يوم السبت، والنصارى يوم الأحد، إن فيه ساعة لا يوافقها مؤمن يصلي يسأل الله شيئا إلا أعطاه.
Ibn Khuzayma (1726) narrated it via Ibn Abu Dhib, from Maqburi, from his father, from Abu Hurairah, who said, as mentioned before.