The Prophet (ﷺ) said, "Whoever believes in Allah and His Apostle, offer prayer perfectly and fasts the month of Ramadan, will rightfully be granted Paradise by Allah, no matter whether he fights in Allah's Cause or remains in the land where he is born." The people said, "O Allah's Messenger (ﷺ) ! Shall we acquaint the people with the is good news?" He said, "Paradise has one-hundred grades which Allah has reserved for the Mujahidin who fight in His Cause, and the distance between each of two grades is like the distance between the Heaven and the Earth. So, when you ask Allah (for something), ask for Al-firdaus which is the best and highest part of Paradise." (i.e. The sub-narrator added, "I think the Prophet also said, 'Above it (i.e. Al-Firdaus) is the Throne of Beneficent (i.e. Allah), and from it originate the rivers of Paradise.")

Allah's Messenger (ﷺ) said, "Know that Paradise is under the shades of swords."

“I was present in a war, and ‘Abdullah bin Rawahah said: O soul of mine! I see that you do Not want to go to Paradise. I swear by Allah that you surely Will enter it, willingly or Unwillingly.’”

We witnessed along with Allah's Messenger (ﷺ) the Khaibar (campaign). Allah's Messenger (ﷺ) told his companions about a man who claimed to be a Muslim, "This man is from the people of the Fire." When the battle started, the man fought very bravely and received a great number of wounds and got crippled. On that, a man from among the companions of the Prophet (ﷺ) came and said, "O Allah's Apostle! Do you know what the man you described as of the people of the Fire has done? He has fought very bravely for Allah's Cause and he has received many wounds." The Prophet (ﷺ) said, "But he is indeed one of the people of the Fire." Some of the Muslims were about to have some doubt about that statement. So while the man was in that state, the pain caused by the wounds troubled him so much that he put his hand into his quiver and took out an arrow and committed suicide with it. Off went some men from among the Muslims to Allah's Messenger (ﷺ) and said, "O Allah's Messenger (ﷺ)! Allah has made your statement true. So-and-so has committed suicide." Allah's Messenger (ﷺ) said, "O Bilal! Get up and announce in public: None will enter Paradise but a believer, and Allah may support this religion (Islam) with a wicked man."

“I saw in a dream that I was at the gate of Paradise and I saw them (those two men). Someone came out of Paradise and admitted the one who had died last, then he came out and admitted the one who had been martyred. Then he came back to me and said: ‘Go back, for your time has not yet come.’” The next morning, Talhah told the people of that and they were amazed. News of that reached the Messenger of Allah (ﷺ) and they told him the story. He said: “Why are you so amazed at that?” They said: “O Messenger of Allah, the first one was the one who strove harder, then he was martyred, but the other one was admitted to Paradise before him. The Messenger of Allah (ﷺ) said: “Did he not stay behind for a year?” They said: “Yes.” He said: “And did not Ramadan come and he fasted, and he offered such and such prayers during that year?” They said: “Yes.” The Messenger of Allah (ﷺ) said: “The difference between them is greater than the difference between heaven and earth.”