What is the difference between the Hadith: "He who dies in defense of his land is a martyr," and the noble verse: "Indeed, those whom the angels take while they are wronging themselves – [the angels] will say, 'In what [condition] were you?' They will say, 'We were oppressed in the land.' They will say, 'Was not the earth of Allah spacious enough for you to emigrate therein?'"

We have not come across a Hadith with this exact wording. If the questioner is referring to the Hadith, "Whoever is killed defending his property is a martyr," or "Whoever is killed defending against injustice is a martyr," then emigration (Hijrah) is obligatory when it becomes due, and it must take precedence over one's homeland and wealth. Whoever prioritizes the love of homelands and wealth over the love of Allah and His Messenger, jihad, and emigration, is threatened with punishment. Ibn Kathir said: "The verse is general for everyone who resides among the polytheists while being able to emigrate and not being able to practice their religion; such a person is unjust to himself and committing a forbidden act by consensus and by the text of the verse." Al-Qurtubi said: "This question and answer indicate that they were Muslims who were unjust to themselves by not emigrating." Al-Shawkani said: "This verse is used as evidence that emigration is obligatory for anyone who is in a land of polytheism or a land where sins are openly committed, if they are able to emigrate and are not among the oppressed." And whoever emigrates for the sake of Allah, Allah will compensate him with something better than what he left behind, as happened to Suhayb al-Rumi.