Invocation for someone you have spoken ill to
اللهُمَّ فأَيُّمَا مُؤْمِنٍ سَبَبْتُهُ فَاجْعَلْ ذَلِكَ لهُ قُرْبةً
إليكَ يَوْمَ القِيَامةِ
230. Allaahumma fa'ayyumaa mu'minin sababtuhu faj'al thaalika
lahu qurbatan 'ilayka yawmal-qiyaamati.
O
Allah, whomever of the believers I have abused, give him the reward of a
sacrificial slaughter for it on the Day of Resurrection.
Reference: Al-Bukhari,
cf. Al-Asqalani, Fathul-Bari 11/171, Muslim 4/2007. The wording in
Muslim's report is: 'make it a purification for him and a source of
mercy.