Hidden evils in apparent goodness
Nahj al-Balāgha|Volume 1|Book 3|Chapter 286
٢٨٦. وَقَالَ (عليه السلام): مَا قَالَ النَّاسُ لِشَيْءٍ: طُوبَى لَهُ، إِلَّا وَقَدْ خَبَأَ لَهُ الدَّهْرُ يَوْمَ سَوْءٍ.
286. Amīr al-mu’minīn, peace be upon him, said: For everything to which people say “how good!” there is an evil hidden in this world.