You should not say that this is only true of the early years after the introduction of Islam. No, "Such has been the law of Allah that has indeed run before, and you shall not find a change in Allah's law."
Bai kamata a yi zaton hakan lamari ne da ya shafi farkon Musulunci ba; a'a, "Hanyar Allah wadda ta shude daga gabanin wannan, kuma ba za ka sami musanya ba ga hanyar Allah (ta taimakon muminai a kan mai zaluntarsu)", wannan sunna ce ta Ubangiji.