Originally Posted by Ibn Umayr

Assalamu Alaykum,

I thought Surah Qasas too, but,

فَجَاءتْهُ إِحْدَاهُمَا تَمْشِي عَلَى اسْتِحْيَاء قَالَتْ إِنَّ أَبِي يَدْعُوكَ لِيَجْزِيَكَ أَجْرَ مَا سَقَيْتَ لَنَا فَلَمَّا جَاءهُ وَقَصَّ عَلَيْهِ الْقَصَصَ قَالَ لَا تَخَفْ نَجَوْتَ مِنَ الْقَوْمِ الظَّالِمِينَ

Out of the first 15 we can rule out,

Surah Baqarah
Surah Aal e Imran
Surah Nisa
Surah Maaidah
Surah Aa'raf
Surah Anfal
Surah Tawbah
Surah Hud
Surah Yusuf

Surah Ibraheem
Surah Hijr

That leaves Surah Ra'ad right?