30:4
فِى بِضْعِ سِنِينَ ۗ لِلَّهِ ٱلْأَمْرُ مِن قَبْلُ وَمِنۢ بَعْدُ ۚ وَيَوْمَئِذٍ يَفْرَحُ ٱلْمُؤْمِنُونَ
fī biḍ'ʿi sinīna lillahi l-amru min qablu wamin baʿdu wayawma-idhin yafraḥu l-mu'minūna
in a few years’ time––God is in command, first and last. On that day, the believers will rejoice
Within three to nine years. The decision of the matter, before and after (these events) is only with Allâh, (before the defeat of the Romans by the Persians, and after the defeat of the Persians by the Romans). And on that Day, the believers (i.e. Muslims) will rejoice (at the victory given by Allâh to the Romans against the Persians) -