Dalil

Quran An-Naml 27:70

وَلَا تَحۡزَنۡ عَلَيۡهِمۡ وَلَا تَكُن فِي ضَيۡقٖ مِّمَّا يَمۡكُرُونَ

Translation

And grieve not over them or be in distress from what they conspire.