That the Prophet ﷺ said: "Fulfill the trust for the one who entrusted you, and do not cheat the one who cheated you."  

قَالَ النَّبِيُّ ﷺ أَدِّ الأَمَانَةَ إِلَى مَنِ ائْتَمَنَكَ وَلاَ تَخُنْ مَنْ خَانَكَ