[Machine] The Messenger of Allah, ﷺ , wrote to Kisra (the emperor of Persia) and Qaysar (the emperor of Byzantine). As for Qaysar, he tore up the letter. And as for Kisra, he ripped it apart. When the Messenger of Allah, ﷺ , heard about that, he said, "As for these, they will be torn apart. And as for those, they will have a remainder." Al-Shafi'i, may Allah have mercy on him, said, "The Messenger of Allah, ﷺ , promised the people the conquest of Persia and Syria."  

كَتَبَ رَسُولُ اللهِ ﷺ إِلَى كِسْرَى وَقَيْصَرَ فَأَمَّا قَيْصَرُ فَوَضَعَهُ وَأَمَّا كِسْرَى فَمَزَّقَهُ فَبَلَغَ ذَلِكَ رَسُولَ اللهِ ﷺ فَقَالَ أَمَّا هَؤُلَاءِ فَيُمَزَّقُونَ وَأَمَّا هَؤُلَاءِ فَسَتَكُونُ لَهُمْ بَقِيَّةٌ قَالَ الشَّافِعِيُّ رَحِمَهُ اللهُ وَوَعَدَ رَسُولُ اللهِ ﷺ النَّاسَ فَتْحَ فَارِسَ وَالشَّامِ