Hadith 31-200

وَبِهذَا الإِسناد عَنِ الرِّضا عَنْ أَبِيهِ‏ عَلَيْهِ السَّلامُ قالَ: رَأى‏ الصَّادِق‏ عَلَيْهِ السَّلامُ رَجُلاً قَد اشتَدَّ جَزعَه عَلَى وُلْدِه فَقالَ: يا هذا أَجَزعَت لِلمُصيبَة الصُّغرى وَغَفَلتَ عَن المُصيبَةِ الكُبرى لَوْ كُنْتَ لَمّا صارَ إِلَيْهِ وَلَدُكَ مُستَعِدّاً لَمَا اشتَدَّ جَزعَك عَلَيْهِ فَمُصابِكَ بِتَركِك الاِستِعدادَ لَهُ أَعْظَمُ مِن مُصابِكَ بِوَلَدِكَ.

According to the same documentation, it is narrated that Ar-Ridha’ (a.s.) quoted on the authority of his father (a.s.), “Once As-Sadiq (a.s.) saw a man who was seriously upset over the death of his son. The Imam (a.s.) told him, ‘Are you so upset about such a minor calamity and have you forgotten about the major calamity? If you had prepared yourself earlier for the loss of your son you would not have become so upset now. This lack of preparedness for the loss of your son is worse than his actual loss.’”