And He said: "They will say: 'To Allah.'" That is: if they say that, then "Say: Will you not then remember?" and believe, while you acknowledge that the earth and whoever is in it belong to Allah.
وَقَالَ: ﴿سيقولون لله﴾ أَي: فَإِذا قَالُوا ذَلِك ﴿قل أَفلا تذكرُونَ﴾ فَتُؤْمِنُوا، وَأَنْتُمْ تُقِرُّوَنْ أَنَّ الْأَرْضَ وَمن فِيهَا لله