At Tawbah, 86 Ayah
9:86
وَإِذَآ أُنزِلَتۡ سُورَةٌ أَنۡ ءَامِنُواْ بِٱللَّهِ وَجَٰهِدُواْ مَعَ رَسُولِهِ ٱسۡتَـٔۡذَنَكَ أُوْلُواْ ٱلطَّوۡلِ مِنۡهُمۡ وَقَالُواْ ذَرۡنَا نَكُن مَّعَ ٱلۡقَٰعِدِينَ ٨٦
Wa 'Idhā 'Unzilat Sūratun 'An 'Āminū Bil-Lahi Wa Jāhidū Ma`a Rasūlihi Asta'dhanaka 'Ūlū Aţ-Ţawli Minhum Wa Qālū Dharnā Nakun Ma`a Al-Qā`idīna
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]."