اَللَّهُمَّ أَلِّفْ بَيْنَ قُلُوبِنَا وَأَصْلِحْ ذَاتَ بَيْنِنَا وَاهْدِنَا سُبُلَ السَّلَامِ وَنَجِّنَا مِنَ الظُّلُمَاتِ إِلَى النُّوْرِ وَجَنِّبْنَا الْفَوَاحِشَ مَا ظَهَرَ مِنْهَا وَمَا بَطَنَ وَبَارِكْ لَنَا فِي أَسْمَاعِنَا وَأَبْصَارِنَا وَقُلُوبِنَا وَأَزْوَاجِنَا وَذُرِّيَّاتِنَا وَتُبْ عَلَيْنَا إِنَّكَ أَنْتَ التَّوَّابُ الرَّحِيْمُ وَاجْعَلْنَا شَاكِرِيْنَ لِنِعْمَتِكَ مُثْنِيْنَ بِهَا قَابِلِيْهَا وَأَتِمَّهَا عَلَيْنَا

Allaahumma allif bayna quloobinaa wa aslih dhaata bayninaa wahdinaa subulas salaam, wa najjinaa minaz zulumaati ilan noor, wa jannibnal fawaa-hisha maa zahara minhaa wa maa batan, wa baarik lanaa fi asmaa’inaa wa absaarinaa wa quloobinaa wa azwaajinaa wa dhurri yaatinaa wa tub alaynaa innaka antat tawwaabur raheem waj’alnaa shaakireena lini’matika muth-neena bihaa qaabileehaa wa atimmahaa 'alaynaa

O Allah, join our hearts, mend our social relationship, guide us to the path of peace, bring us from darkness to light, save us from obscenities, outward or inward, and bless our ears, our eyes, our hearts, our wives, our children, and relent toward us; Thou art the Relenting, the Merciful. And make us grateful for Thy blessing and make us praise it while accepting it and give it to us in full. Abdullah ibn Mas'ud (RA) said: The Messenger of Allah (ﷺ) used to teach us this dua to recite after Tashahhud.

Reference: Daif (Albani). Abu Dawud: 969