Al-Kāfi

Hadith 1199
oppression
4ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنْ إِبْرَاهِيمَ بْنِ عَبْدِ الْحَمِيدِ عَنِ الْوَلِيدِ بْنِ صَبِيحٍ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) قَالَ مَا مِنْ مَظْلِمَةٍ أَشَدَّ مِنْ مَظْلِمَةٍ لا يَجِدُ صَاحِبُهَا عَلَيْهَا عَوْناً إِلا الله عَزَّ وَجَلَّ.
4. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from al-Husayn ibn Sa’id from Ibrahim ibn ‘Abd al-Hamid from al-Walid ibn Sabiyh from Abu ‘Abdillah (a.s.) who has said the following: “No injustice is more severe than the one against which the oppressed cannot find any support except Allah, the Most Majestic, the Most Holy.”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī