Al-Kāfi - Volume 2 > Prayer Against the Enemy
Hadith #1

1ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ يَحْيَى بْنِ الْمُبَارَكِ عَنْ عَبْدِ الله بْنِ جَبَلَةَ عَنْ إِسْحَاقَ بْنِ عَمَّارٍ قَالَ شَكَوْتُ إِلَى أَبِي عَبْدِ الله (عَلَيهِ السَّلام) جَاراً لِي وَمَا أَلْقَى مِنْهُ قَالَ فَقَالَ لِيَ ادْعُ عَلَيْهِ قَالَ فَفَعَلْتُ فَلَمْ أَرَ شَيْئاً فَعُدْتُ إِلَيْهِ فَشَكَوْتُ إِلَيْهِ فَقَالَ لِيَ ادْعُ عَلَيْهِ قَالَ فَقُلْتُ جُعِلْتُ فِدَاكَ قَدْ فَعَلْتُ فَلَمْ أَرَ شَيْئاً فَقَالَ كَيْفَ دَعَوْتَ عَلَيْهِ فَقُلْتُ إِذَا لَقِيتُهُ دَعَوْتُ عَلَيْهِ قَالَ فَقَالَ ادْعُ عَلَيْهِ إِذَا أَدْبَرَ وَإِذَا اسْتَدْبَرَ فَفَعَلْتُ فَلَمْ أَلْبَثْ حَتَّى أَرَاحَ الله مِنْهُ.

1. A number of our people have narrated from Sahl ibn Ziyad from Yahya ibn al- Mubarak from ‘Abd Allah ibn Jabalah from Ishaq ibn ‘Ammar who has said the following: “Once I complained before abu ‘Abd Allah (a.s.) about my neighbor and what 1 had suffered from him. The narrator has said that the Imam said, ‘Pray and plead before Allah against him.’ I did so and did not have any results and I went back to the Imam to complain. He said, ‘Pray against him.’ I said, ‘May Allah keep my soul in service for your cause, I have already done but have not seen any result.’ The Imam said, ‘How did you pray against him?’ I said, ‘When I met him I prayed against him.’ The Imam said, ‘Pray against him when he moves away from you.’ 1 then did as I was told and Allah very soon granted me relief.’”