رَبَّنَا اغْفِرْ لَنَا وَلِإِخْوَانِنَا الَّذِينَ سَبَقُونَا بِالْإِيمَانِ وَلَا تَجْعَلْ فِي قُلُوبِنَا غِلًّا لِّلَّذِينَ آمَنُوا رَبَّنَا إِنَّكَ رَءُوفٌ رَّحِيمٌ

Rabbanagh-fir lanaa wa li’ikhwaaninal-ladhiina sabaquunaa biliimaani wa laa taj’al fii quluubinaa ghillan lilladhiina aamanuu Rabbanaa innaka Ra’uufun Rahiim. (59:10)

Our Lord, forgive us and those of our brethren who preceded us in faith, and do not allow any spite to remain in our hearts toward the believers, our Lord, surely You are Full of Kindness, Most Merciful.

Ameen

This Qur’anic du’aa must inform our attitudes regarding our pious predecessors. That includes the Companions and their Followers. Having rancor, malice, or hatred against other believers, especially the pious predecessors, is a serious disease. This du’aa, when made sincerely, can cure it.

(Source: Khalid Baig’s commentary to du’aa #36 in the Accepted Whispers: Munajat-e-Maqbul)