The first is that all the worlds benefited from his message. As for his followers, through it they attained honour in this world and the Hereafter.

As for his enemies who fought him, those whose killing and death were hastened were better off, because their continued life would only have increased the severity of their punishment in the Hereafter. Wretchedness had already been decreed for them, so an earlier death was better for them than a longer life spent in disbelief.

As for those who entered into covenants with him, they lived in this world under his shelter, covenant, and protection. By virtue of that covenant, they were less evil than those who fought him.

As for the hypocrites, by outwardly professing faith in him, they secured protection and inviolability for their lives, property, and families, and the rulings applicable to Muslims were applied to them in matters of mutual inheritance and otherwise.

As for the nations far removed from him, through his message Allah, glorified be He, lifted the threat of universal punishment from the inhabitants of the earth. Thus, all the worlds benefited from his message.

The second explanation is that he is a mercy to everyone. The believers, however, accepted this mercy and benefited from it in this world and the Hereafter, whereas the disbelievers rejected it. Their rejection does not mean that he ceases to be a mercy to them; rather, they did not accept that mercy. It is like saying, “This is a remedy for this illness.” If someone does not use it, it does not cease to be a remedy for that illness.