The five pillars are the basic building blocks of Islam and they are: Testifying that there is no deity worthy of worship except Allah and that Muhammad is the Messenger of Allah, establishing the salah (prayer), paying the zakat (obligatory charity), making the hajj (pilgrimage) to the House, and fasting in Ramadhan.

On the authority of Abdullah, the son of Umar ibn al-Khattab (may Allah be pleased with him), who said:

‘I heard the Messenger of Allah (peace and blessings of Allah be upon him) say, “Islam has been built on five [pillars]: testifying that there is no deity worthy of worship except Allah and that Muhammad is the Messenger of Allah, establishing the salah (prayer), paying the zakat (obligatory charity), making the hajj (pilgrimage) to the House, and fasting in Ramadhan.”’ It was related by al-Bukhari and Muslim.

عن أبي عـبد الرحمن عبد الله بن عـمر بـن الخطاب رضي الله عـنهما ، قـال : سمعت رسول الله صلى الله عليه وسـلم يقـول :( بـني الإسـلام على خـمـس : شـهـادة أن لا إلـه إلا الله وأن محمد رسول الله ، وإقامة الصلاة ، وإيـتـاء الـزكـاة ، وحـج البيت ، وصـوم رمضان ) رواه البخاري [ رقم : 8 ] ومسلم [ رقم : 16 ].