Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates that when this verse was revealed: {وَلَا تَقْرَبُوْا مَالَ الْیَتِیمِ إِلَّا بِالَّتِی ہِیَ أَ حْسَنُ} … Do not go near the wealth of the orphan, except in a way that is better. So the people separated the wealth of the orphans, and when they separated it, their food began to spoil and the meat began to stink. When this was mentioned to the Prophet (peace be upon him), this verse was revealed: {وَإِنْ تُخَالِطُوْہُمْ فَإِخْوَانُکُمْ وَاللّٰہُ یَعْلَمُ الْمُفْسِدَ مِنَ الْمُصْلِحِ} … If you mix with the orphans, then they are your brothers. Allah knows the corrupter from the reformer. After this command, the Companions mixed their food with theirs.