Hadith on Islam: Islam is built upon the Five Pillars of Monotheism, Prayer, Charity, Fasting, and Pilgrimage

Ibn Umar reported: The Messenger of Allah, peace be upon him, said, “Islam is built upon five: worshipping Allah alone and disbelieving in what is worshipped besides him, establishing prayer, paying charity, performing the pilgrimage, and fasting the month of Ramadan.”

[Sahih Muslim, Book 1, Number 18]

عَنْ ابْنِ عُمَرَ  عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ بُنِيَ الْإِسْلَامُ عَلَى خَمْسٍ عَلَى أَنْ يُعْبَدَ اللَّهُ وَيُكْفَرَ بِمَا دُونَهُ وَإِقَامِ الصَّلَاةِ وَإِيتَاءِ الزَّكَاةِ وَحَجِّ الْبَيْتِ وَصَوْمِ رَمَضَانَ

صحيح مسلم – كِتَاب الْإِيمَانِ – بني الإسلام على خمسة على أن يوحد الله وإقام الصلاة وإيتاء الزكاة وصيام رمضان والحج