The Pillars of Islam
Although there is no direct verse in the Quran that clearly specifies the five "pillars" of Islam as such, yet various Quranic verses indicate five "pillars" or foundations of Islam, they are:
1- Testimony of Faith 2- The Prayer 3- The Obligatory Charity 4- The Fasting of Ramadan 5- The Pilgrimage
The details presented here for each of the five pillars of Islam are a reflection of what is contained and authorised in the Quran and nothing else. Consequently, many rules/practices that are taken for granted and considered by many Muslims to form integral parts of Islamic practice are absent here simply because they are not authorised in the Quran. May we all be reminded of God's clear words in the Quran:
"Shall I seek other than God as a source of law, when He has brought down to you this book fully detailed?" 6:114
"Follow what is revealed to you from your Lord" 33:2
Ultimately, it is up to each reader then to decide for themselves whether to stick to God's Law in the Quran or to follow additional practices not found in the Quran.