"Jihad," "holy fighting," or "Allah's Cause," is spoken of in the Hadith as follows: "Allah's Apostle dictated the Divine Verse: 'Not equal are those unbelievers who sit at home and those who strive hard, fighting in the Cause of Allah with their wealth and lives.'" (Bukhari V4B52N85) . The Qur'an says, "Zaid said, 'Maktum came to the Prophet while he was reciting that verse. On that Maktum said, "O Allah's Apostle! If I had power, I would take part in Jihad." He was a blind man. So Allah sent down revelation to His Apostle ... "Except those who are disabled by injury or are blind or lame."'" (Qur'an 004:095) If jihad is a spiritual struggle as many claim it to be, then why would Allah grant the physically disabled an exemption? The verse goes on to say, "Not equal are those believers who sit at home and receive no injurious hurt, and those who strive hard [Jihad] fighting in the Cause of Allah, fighting with their wealth and bodies to those who sit (at home)."
Another Hadith says, "The Prophet said, "By Him in Whose Hands my life is! Were it not for the believers who do not want me to leave them, I would certainly and always go forth in army-units setting out for Jihad. I would love to be martyred in Allah's Cause and then get resurrected and get martyred again only to be resurrected so that I could get martyred once more.'" (Bukhari V4B52N54)

Furthermore, in the "Book of Jihad," Bukhari provides us with this explanation: "Jihad is holy fighting in Allah's Cause with full force of weaponry. It is given the utmost importance in Islam and is one of its Pillars. By Jihad Islam is established, Allah is made superior and He becomes the only God who may be worshiped. By Jihad Islam is propagated and made superior. By abandoning Jihad (may Allah protect us from that) Islam is destroyed and Muslims fall into an inferior position. Their honor is lost, their lands are stolen, and Muslim rule and authority vanish. Jihad is an obligatory duty in Islam on every Muslim. He who tries to escape this duty, or does not fervently fulfill this obligation, dies as a hypocrite." The 150 Hadiths that follow this definition all speak of fighting; none suggest a spiritual struggle.