hadith
7596
۞
Imam Ali (AS) said, The person who will face the quickest retribution is the man with whom you make a contract while having the intention of being loyal to it, whereas his intention is to betray you.
الإمامُ عليٌّ (عَلَيهِ الّسَلامُ) : أسْرَعُ الأشْياءِ عُقُوبَةً رَجُلٌ عاهَدْتَهُ عَلى أمْر وَكانَ مِنْ نِيَّتِكَ الوَفاءُ لَهُ