that the Messenger of Allah ﷺ said: "Islam is based upon five: the testimony of La Ilaha Illallah, and that Muhammad is the Messenger of Allah, the establishment of the Salat, giving the Zakat, fasting (the month of) Ramadan, and performing Hajj to the House."  

رَسُولُ اللَّهِ ﷺ بُنِيَ الإِسْلاَمُ عَلَى خَمْسٍ شَهَادَةُ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ وَأَنَّ مُحَمَّدًا رَسُولُ اللَّهِ وَإِقَامُ الصَّلاَةِ وَإِيتَاءُ الزَّكَاةِ وَصَوْمُ رَمَضَانَ وَحَجُّ الْبَيْتِ وَفِي الْبَابِ عَنْ جَرِيرِ بْنِ عَبْدِ اللَّهِ