It is reported about Sayyiduna Abdullah (may Allah be pleased with him) that he said: "We used to declare (Hell) binding for those who commit major sins, until this verse was revealed: 'Indeed, Allah Almighty will not forgive that a partner be associated with Him, and besides that He will forgive whomever He wills.'" The narrator says: Then the Prophet (peace and blessings be upon him) forbade us from declaring Hell binding for any one of those who affirm the oneness of Allah.
Al-Tabarani recorded it. Its chain contains a narrator, Abu Raja' al-Kalbi, whom I do not know, and the narrators of this narration are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب التوبة / 17484