"When the Messenger of Allah , I will fight them for withholding it.' 'Umar said: 'By Allah, as soon as I saw that Allah has expanded the chest of Abu Bakr to fighting, I knew that it was the truth.'"
Sunan an-Nasa'i Book 37, Hadith 8
← Previous Hadith The Messenger of Allah said: "I have been commanded to fight the people until they say La ilaha illallah (there is none worthy of worship but Allah). Whoever says La ilaha illallah, his wealth and his life are safe from me except for a right that is due, and his reckoning will be with Allah."

Sunan an-Nasa'i Book 37, Hadith 7 Next Hadith → The Messenger of Allah said: "I have been commanded to fight the people until they say La ilaha illallah, and whoever says it, his life and his wealth are safe from me, except for a right that is due, and his reckoning will be with Allah."

Sunan an-Nasa'i Book 37, Hadith 9