(13) باب عَلَى كَمْ بُنِيَ الإِسْلاَمُ
It was narrated from Ibn 'Umar that:
A man said to him: "Why don't you go out and fight?" He said: "I heard the Messenger of Allah [SAW] say: 'Islam is built on five (pillars): Testimony that there is none worthy of worship except Allah, establishing Salah, giving Zakah, Hajj, and fasting Ramadan.'"
Reference: Sunan an-Nasa'i 5001
In-book reference: Book 47, Hadith 17
English translation: Vol. 6, Book 47, Hadith 5004