This shows the importance of guarding Muslim frontiers against the Kuffar. If the sovereignty of Muslims in their land is lost, their Deen becomes compromised: Muslims lose the freedom to practice Islam, and even to think independently. This is what we can see has happened in many parts of the world today. The weaker Muslims even attempt to change Islam to justify what they do among the Kuffar or hypocrites. Therefore, we are told the virtues of the Mujahid who defends the land of Islam and protects the freedom of the Muslims.
The Mujahid continues to have good deeds written for him until the Day of Resurrection, while the deeds of all others end with their deaths. The records of others are finalized but that of the Mujahid continues to accrue good deeds as though he were still doing them, until the Day of Judgement. The guard defending Muslim borders is also spared from the trials of the grave. This is such an important job and the reward for it so enormous that “…for a Muslim to keep watch at the border of the Islamic state for one night is better than the world and what it contains.” [Sahih Bukhari]
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