Nahj al-Balāgha
Hadith 1877٣٠٧. وَقَالَ (عليه السلام): يَنَامُ الرَّجُلُ عَلَى الثُّكْلِ وَلَا يَنَامُ عَلَى الْحَرَبِ.
307. Amīr al-mu’minīn, peace be upon him, said: A man can sleep on the death of his child, but cannot sleep at loss of property.