Surah At-Taubah (The Repentance), Verse 99

وَمِنَ الْاَعْرَابِ مَنْ یُّؤْمِنُ بِاللّٰهِ وَالْیَوْمِ الْاٰخِرِ وَیَتَّخِذُ مَا یُنْفِقُ قُرُبٰتٍ عِنْدَ اللّٰهِ وَصَلَوٰتِ الرَّسُوْلِ اَلَاۤ اِنَّهَا قُرْبَةٌ لَّهُمْ سَیُدْخِلُهُمُ اللّٰهُ فِیْ رَحْمَتِهٖ اِنَّ اللّٰهَ غَفُوْرٌ رَّحِیْمٌ 

Wa minal A'raabi mai yu'minu billaahi wal yawmil aakhiri wa yattakhizu maa yunfiqu qurubaatin 'indal laahi wa salawaatir Rasool; 'alaaa innahaa qurbatul lahum; sayudkhilu humul laahu fee rahmatih; innal laaha Ghafoorur Raheem

“But some of the desert Arabs believe in Allah and the Last Day, and look on their payments as pious gifts bringing them nearer to Allah and obtaining the prayers of the Messenger. Aye, indeed they bring them nearer (to Him): soon will Allah admit them to His Mercy: for Allah is Oft- forgiving, Most Merciful.”

Quran 9:99 (Yusuf Ali Translation)