Sayyiduna Anas (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "On every Friday, six hundred thousand people are set free by Allah Almighty; they are set free from Hell, and for each one of them Hell had already become due."
Abu Ya'la recorded it; its chain contains a narrator, al-Azwar Abu Ghalib al-Basri, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب التوبة / 17634