Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
quran:83:34

So Today those who believed are laughing at the disbelievers,  

So today, that is, the Day of Resurrection, the believers will be laughing at the disbelievers,
القرآن:٨٣:٣٤

فَالْيَوْمَ الَّذِينَ آمَنُوا مِنَ الْكُفَّارِ يَضْحَكُونَ  

{فاليوم} أي يوم القيامة {الذين آمنوا من الكفار يضحكون}.