Sahih al-Bukhari 6624
Sahih al-Bukhari · Book 83: Oaths and Vows · "Allah will not punish you for what is unintentional in your oaths, but He will punish you for your deliberate oaths ..."
Narrated Abu Huraira:
حَدَّثَنِي إِسْحَاقُ بْنُ إِبْرَاهِيمَ ، أَخْبَرَنَا عَبْدُ الرَّزَّاقِ ، أَخْبَرَنَا مَعْمَرٌ ، عَنْ هَمَّامِ بْنِ مُنَبِّهٍ ، قَالَ هَذَا مَا حَدَّثَنَا أَبُو هُرَيْرَةَ ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " نَحْنُ الآخِرُونَ السَّابِقُونَ يَوْمَ الْقِيَامَةِ " .
The Prophet (ﷺ) said, "We (Muslims) are the last in the world, but will be foremost on the Day of Resurrection."