وَأَصْلِحْ لِي فِي ذُرِّيَّتِي إِنِّي تُبْتُ إِلَيْكَ وَإِنِّي مِنَ الْمُسْلِمِينَ
Wa aslih lii fii dhurriyyatii, innii tubtu ilayka wa innii minal muslimiin. (46:15)
And grant for my benefit goodness in my progeny. Truly I have turned to You repentant and truly I am one of those who submit to You.
This is du’aa #34 in Mawlana Ashraf ‘Ali Thanawi’s Munajat-e-Maqbul (translated as The Accepted Whispers by Khalid Baig) and is listed under the Saturday collection of daily du’aas.