Jundab reported: The Messenger of Allah صلى الله عليه وسلم said: A man said, “By Allah! Allah will not forgive so-and-so!” So Allah Almighty said, “Who is he who swore by Me that I will not forgive so-and-so? I have forgiven him and nullified your good deeds.”
[Sahih Muslim, Book 32, Number 6350]
Book of Righteousness, Good Relations and Manners
Chapter: The prohibition of making humanity despair of the Mercy of Allah
[Sahih Muslim, Book 32, Number 6350]
Book of Righteousness, Good Relations and Manners
Chapter: The prohibition of making humanity despair of the Mercy of Allah
عَنْ جُنْدَبٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم حَدَّثَ أَنَّ رَجُلاً قَالَ وَاللَّهِ لاَ يَغْفِرُ اللَّهُ لِفُلاَنٍ وَإِنَّ اللَّهَ تَعَالَى قَالَ مَنْ ذَا الَّذِي يَتَأَلَّى عَلَىَّ أَنْ لاَ أَغْفِرَ لِفُلاَنٍ فَإِنِّي قَدْ غَفَرْتُ لِفُلاَنٍ وَأَحْبَطْتُ عَمَلَكَ
كِتَاب الْبِرِّ وَالصِّلَةِ وَالْآدَابِ – بَاب النَّهْيِ عَنْ تَقْنِيطِ الْإِنْسَانِ مِنْ رَحْمَةِ اللَّهِ تَعَالَى
كِتَاب الْبِرِّ وَالصِّلَةِ وَالْآدَابِ – بَاب النَّهْيِ عَنْ تَقْنِيطِ الْإِنْسَانِ مِنْ رَحْمَةِ اللَّهِ تَعَالَى