ʿUyūn akhbār al-Riḍā - Volume 1 > Various Traditions From al-Ridha (s)
Hadith #10

10 - وَبِهذَا الإسناد عَنِ الرِّضا عَلَيْهِ السَّلامُ عَنْ أَبيهِ مُوسَى بْنِ جَعْفَر عَلَيْهِ السَّلامُ قالَ: رَأَى الصَّادِقُ‏ عَلَيْهِ السَّلامُ رَجُلاً قَدِ اشْتَدَّ جَزَعُهُ عَلَى وَلَدِهِ فَقَالَ يَا هَذَا جَزِعْتَ لِلْمُصِيبَةِ الصُّغْرَى وَغَفَلْتَ عَنِ الْمُصِيبَةِ الْكُبْرَى لَوْ كُنْتَ لِمَا صَارَ إِلَيْهِ وَلَدُكَ مُسْتَعِدّاً لَمَا اشْتَدَّ عَلَيْهِ جَزَعُكَ فَمُصَابُكَ بِتَرْكِكَ الاسْتِعْدَادَ لَهُ أَعْظَمُ مِنْ مُصَابِكَ بِوَلَدِكَ.

30-10 According to the same documentation, on the authority of Al-Ridha (s), on the authority of his father Musa ibn Ja’far (s) it is narrated that As-Sadiq (s) saw a man who was wailing over the death of his child. The Imam (s) said, “O the one who is crying over the minor calamity and is neglecting the major calamity! Had you prepared yourself for the loss of your child, it would not have been so difficult for you. Thus not being prepared is a calamity that is greater than the loss of your child.”