(Al-Kahf) 18 : 76
قَالَ إِنْ سَأَلْتُكَ عَنْ شَيْءٍ بَعْدَهَا فَلَا تُصَاحِبْنِي ۖ قَدْ بَلَغْتَ مِنْ لَدُنِّي عُذْرًا
He said: "If I ask you about anything after this, then you don’t keep me as a companion; you have obtained from me an excuse".