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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:7:8 –

And the weighing ˹of deeds˺ that Day will be the truth. So those whose scales are heavy - it is they who will be the successful.  

The weighing, of deeds or of the scrolls of these ˹deeds˺ shall be — in a balance that has a tongue and two palms ˹as scales˺, as reported in a hadīth — on that day, that is, on the day of the questioning mentioned, namely, the Day of Resurrection, the true ˹weighing˺, the fair ˹weighing˺ (al-haqq, ‘the true’, is an adjectival qualification of al-wazn, ‘the weighing’). As for those whose scales are heavy, with good deeds, they are the successful, the triumphant.
القرآن:٧:٨ –

وَالْوَزْنُ يَوْمَئِذٍ الْحَقُّ ۚ فَمَنْ ثَقُلَتْ مَوَازِينُهُ فَأُولَٰئِكَ هُمُ الْمُفْلِحُونَ  

{والوزن} للأعمال أو لصحائفها بميزان له لسان وكتفان كما ورد في حديث كائن {يومئذ} أي يوم السؤال المذكور وهو يوم القيامة {الحق} العدل صفة الوزن {فمن ثقلت موازينه} بالحسنات {فأولئك هم المفلحون} الفائزون.

See similar narrations below:

Collected by Qurʾān
quran:23:102 –

And those whose scales are heavy ˹with good deeds˺ - it is they who are the successful.  

Then those whose scales are heavy, with good deeds, they are the successful, the winners;
القرآن:٢٣:١٠٢ –

فَمَنْ ثَقُلَتْ مَوَازِينُهُ فَأُولَٰئِكَ هُمُ الْمُفْلِحُونَ  

{فمن ثقلت موازينه} بالحسنات {فأولئك هم المفلحون} الفائزون.