And His saying: "and in the Hereafter," meaning: Paradise. "There is no change in the words of Allah; that is the great triumph," meaning the great salvation from the Fire.
وَقَوله: ﴿وَفِي الْآخِرَة﴾ يَعْنِي: الْجَنَّةَ ﴿لَا تَبْدِيلَ لِكَلِمَاتِ اللَّهِ ذَلِكَ هُوَ الْفَوْزُ الْعَظِيمُ﴾ النجَاة الْعَظِيمَة من النَّار.