Qur'ān 9:75 · At-Tawbah (التوبة)

۞ وَمِنْهُم مَّنْ عَـٰهَدَ ٱللَّهَ لَئِنْ ءَاتَىٰنَا مِن فَضْلِهِۦ لَنَصَّدَّقَنَّ وَلَنَكُونَنَّ مِنَ ٱلصَّـٰلِحِينَ

And among them are those who made a covenant with Allah, [saying], "If He should give us from His bounty, we will surely spend in charity, and we will surely be among the righteous."