Chapter on the Virtue of Children
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 3|Chapter 49
وَ فِي خَبَرٍ آخَرَ قَالَ قَالَ اَلنَّبِيُّ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ: "مَنْ كَانَ عِنْدَهُ صَبِيٌّ فَلْيَتَصَابَ لَهُ ".
In another narration, the Prophet (peace and blessings be upon him and his family) said: "Whoever has a child should act childishly with him."
- Ṣaḥīḥ al-Faqīh