اَللَّهُمَّ أَمَتُكَ وَبِنْتُ أَمَتِكَ اِحْتَاجَتْ إِلَى رَحْمَتِكَ، وَأَنْتَ غَنِيٌّ عَنْ عَذَابِهَا، إِنْ كَانَتْ مُحْسِنَةً فَزِدْ فِي حَسَنَاتِهَا، وَإِنْ كَانَتْ مُسِيئَةً فَتَجَاوَزْ عَنْهَا

Allaahumma ‛amatuka wabintu ‛amatika, i’htaajat ilaa ra’hmatika, wa anta ghaniyyun ‛an ‛adhaabiha, in kaanat mu’hsinatan fazid fee ‘hasanaatiha, wa in kaanat musee’atan fa tajaawaz ‛anha

O Allah, she is the daughter of One of Your male & female slave, she is in need of Your mercy, and You are not in need of her torment. If she was pious then increase her rewards and if she was a sinner then pardon her.

Reference: Sahih (Albani). Al-Hakim: 1/359