Sura 9 At-Tawbah (The Repentance), ayah 86

1. وَإِذَا أُنْزِلَتْ سُورَةٌ أَنْ آمِنُوا بِاللَّهِ وَجَاهِدُوا مَعَ رَسُولِهِ اسْتَأْذَنَكَ أُولُو الطَّوْلِ مِنْهُمْ وَقَالُوا ذَرْنَا نَكُنْ مَعَ الْقَاعِدِينَ

   And when a surah was revealed (enjoining them) to believe in Allah and to fight with His Messenger, those of wealth among them asked your permission (to stay back) and said, "Leave us to be with them who sit (at home)."

   9:86

Translation: Saheeh International