Al-Kāfi

Hadith 1680
fear-of-god
8ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى عَنِ الْحَسَنِ بْنِ مَحْبُوبٍ عَنْ عَنْبَسَةَ الْعَابِدِ قَالَ قَالَ أَبُو عَبْدِ الله (عَلَيهِ السَّلام) إِنْ لَمْ تَكُنْ بِكَ بُكَاءٌ فَتَبَاكَ.
8. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from al-Hassan ibn Mahbub from ‘Anbasah al-‘Abid who has said the following: “Abu ‘Abd Allah (a.s.) has said, ‘If you cannot weep then make a weeping-like face.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī