hadith
9318
۞
Imam Ali (AS) said, Scheming against one who trusts in you is ingratitude [and betrayal].
الإمامُ عليٌّ (عَلَيهِ الّسَلامُ) : اَلمَكْرُ بِمَنِ ائْتَمَنَكَ كُفْرٌ