How will the Antichrist emerge during a time of famine and scarcity of crops, while the Mahdi's conquests have already filled a large part of the world?

Allah will fill the earth with justice upon the appearance of the Mahdi, which will lead to an abundance of good and the descent of blessings. Allah will send down rain, the earth will bring forth its vegetation, and livestock will increase.

Before the emergence of the Dajjal, there will be three severe years during which people will experience hunger. Allah will progressively withhold rain and vegetation, and in the third year, all rain and vegetation will be withheld. During that time, people will sustain themselves by saying "La ilaha illallah" (There is no god but Allah), "Allahu Akbar" (Allah is the Greatest), and "Alhamdulillah" (Praise be to Allah).