Al-Kāfi

Hadith 1301
mockery-ridiculemajor-sins
3ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى عَنِ ابْنِ مَحْبُوبٍ عَنْ عَبْدِ الله بْنِ سِنَانٍ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) قَالَ مَنْ عَيَّرَ مُؤْمِناً بِذَنْبٍ لَمْ يَمُتْ حَتَّى يَرْكَبَهُ.
3. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from ibn Mahbub from ‘Abd Allah ibn Sinan from Abu ‘Abdillah (a.s.) who has said the following: “Abu ‘Abd Allah (a.s.) has said, ‘Whoever debases a believer for a sin will not die before he himself commits such a sin.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī