Hadith on Iman: Purity is half of faith, prayer is light

Abu Malik al-Ashari reported: The Messenger of Allah, peace and blessings be upon him, said, “Purity is half of the faith. The praise of Allah fills the Scale, as the glorification and praise of Allah fill everything between the heavens and the earth. Prayer is a light, charity is a proof, and patience is luminous. The Quran is a decisive proof for you or against you. All people begin the day by trading for their soul, either setting it free or ensuring its ruin.

Source: Ṣaḥīḥ Muslim 223

Grade: Sahih (authentic) according to Muslim

عَنْ أَبِي مَالِكٍ الْأَشْعَرِيِّ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ الطُّهُورُ شَطْرُ الْإِيمَانِ وَالْحَمْدُ لِلَّهِ تَمْلَأُ الْمِيزَانَ وَسُبْحَانَ اللَّهِ وَالْحَمْدُ لِلَّهِ تَمْلَآَنِ أَوْ تَمْلَأُ مَا بَيْنَ السَّمَاوَاتِ وَالْأَرْضِ وَالصَّلَاةُ نُورٌ وَالصَّدَقَةُ بُرْهَانٌ وَالصَّبْرُ ضِيَاءٌ وَالْقُرْآنُ حُجَّةٌ لَكَ أَوْ عَلَيْكَ كُلُّ النَّاسِ يَغْدُو فَبَايِعٌ نَفْسَهُ فَمُعْتِقُهَا أَوْ مُوبِقُهَا

223 صحيح مسلم كتاب الطهارة باب فضل الوضوء