Once ‘Umar (Radhiyallahu ‘Anhu) was sitting with his companions when all of a sudden he started to laugh after which he began to cry. Those around him asked him, “What made you laugh after which you cried?” He replied,” During the days of Jāhiliyyah (ignorance), we used to make idols out of dates which we would worship and when we would get hungry we would eat them! Remembering this made me laugh. As for my crying, one day, I took my daughter to a field to bury her alive. As I was digging the grave, some dust fell on my beard. My daughter saw this and wiped the dust off my beard. Remembering this made me cry.”
However, there are some fundamental flaws in this narration.