حَتَّى

حَتَّىٰٓ أَتَىٰنَا ٱلْيَقِينُ

Until there came to us the certainty [i.e., death]."

حَتَّىٰ زُرْتُمُ ٱلْمَقَابِرَ

Until you visit the graveyards.

فَتَوَلَّ عَنْهُمْ حَتَّىٰ حِينٍۢ

So, [O Muḥammad], leave them for a time.