Quran 9:75 from Surah At-Tawba on Divine Marvels.
۞وَمِنۡهُم مَّنۡ عَٰهَدَ ٱللَّهَ لَئِنۡ ءَاتَىٰنَا مِن فَضۡلِهِۦ لَنَصَّدَّقَنَّ وَلَنَكُونَنَّ مِنَ ٱلصَّٰلِحِينَ
English translation: And among them (is he) who made a covenant (with) Allah If He gives us of His bounty surely we will give charity and surely we will be among the righteous
Transliteration: wamin'hum man ahada al-laha la-in atana min fadlihi lanassaddaqanna walanakunanna mina al-salihina