(Al-Vaqia) 56 : 62
وَلَقَدْ عَلِمْتُمُ النَّشْأَةَ الْأُولَىٰ فَلَوْلَا تَذَكَّرُونَ
And surely you know about your first creation, then why don’t you remember?
See explanation 39: 6; and 53: 32.