﴿ وَلَوْ قَٰتَلَكُمُ ٱلَّذِينَ كَفَرُوا۟ لَوَلَّوُا۟ ٱلْأَدْبَٰرَ ثُمَّ لَا يَجِدُونَ وَلِيًّۭا وَلَا نَصِيرًۭا ﴾

“And [now,] if they who are bent on denying the truth should fight against you, they will indeed turn their backs [in flight], and will find none to protect them and none to bring them succour:”

وَعَدَكُمُ اللَّـهُ مَغَانِمَ كَثِيرَ‌ةً تَأْخُذُونَهَا فَعَجَّلَ لَكُمْ هَـٰ وَأُخْرَ‌ىٰ لَمْ تَقْدِرُ‌وا عَلَيْهَا قَدْ أَحَاطَ اللَّـهُ بِهَا (And (there are) other (victories) that have not come within your power as yet, (but) Allah has encompassed them...." (48:21). This verse embodies a prophecy that Muslims will achieve many more great victories after the victory of Khaibar. But Allah says that they were unable to achieve them at that time; they would happen in future. Among these victories, Makkah was the first one to be achieved. Therefore, some scholars refer this to the victory of Makkah. However, the wordings are general and refer to all the victories that will be achieved till the end of the world (Mazhari).