Abdullah bin Mubarak عبد الله بن المبارك · The Book of Jihad

: “When the Messenger of Allah died and Abu Bakr was appointed as Khalifah, and some of the Arab’s disbelieved, Umar said: ‘O Abu Bakr! How can you fight the people when 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 except Allah). Whoever says La ilaha illallah, his life and his property are safe from me, except for its right, and his reckoning…

"When the following was revealed: 'Not equal are those of the believers who sit (at home),' An-Nisa' 4:95. An-Nisa' 4:95.

"The Messenger of Allah (ﷺ) said: 'The dust in the cause of Allah and the smoke of Hell will never be combined in the nostrils of a Muslim, and stinginess and faith will never be combined in a Muslim man's heart.'"

"The Messenger of Allah (ﷺ) said: 'The guests of Allah, the Mighty and Sublime, are three: The warrior, the pilgrim performing Hajj, and the pilgrim performing 'Umrah.'"

"O 'Amr! Tell us a Hadith that you heard from the Messenger of Allah (ﷺ)." He said: "I heard the Messenger of Allah (ﷺ) say: 'Whoever develops one gray hair in the cause of Allah, Most High, it will be light for him on the Day of Resurrection. Whoever shoots an arrow in the cause of Allah, Most High, whether it reaches the enemy or not, it will be as if he freed a slave. Whoever frees a believing slave,…

"The martyrs and those who dies in their beds referred a dispute to our Lord concerning those who dies of the plague. The martyrs said: 'Our brothers were killed as we were killed.' And those who dies in their beds said: 'Our brothers dies on their beds as we died.' Our Lord said: 'Look at their wounds; if their wounds; if their wounds are like the wounds of those who were killed then they are of them and belong with…