وَمِنَ الْأَعْرَابِ مَن يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ وَيَتَّخِذُ مَا يُنفِقُ قُرُبَاتٍ عِندَ اللَّهِ وَصَلَوَاتِ الرَّسُولِ ۚ أَلَا إِنَّهَا قُرْبَةٌ لَّهُمْ ۚ سَيُدْخِلُهُمُ اللَّهُ فِي رَحْمَتِهِ ۗ إِنَّ اللَّهَ غَفُورٌ رَّحِيمٌ
“However, among the Bedouins are those who believe in Allah and the Last Day, and consider what they donate as a means of coming closer to Allah and [receiving] the prayers of the Messenger. It will certainly bring them closer. Allah will admit them into His mercy. Surely Allah is All-Forgiving, Most Merciful.”
Part of the well-established hypocrites-who-stayed-behind-from-Tabuk passage of Surat al-Tawbah.