At Tawbah Ayah 38

يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُواْ مَا لَكُمْ إِذَا قِيلَ لَكُمُ ٱنفِرُواْ فِى سَبِيلِ ٱللَّهِ ٱثَّاقَلْتُمْ إِلَى ٱلْأَرْضِ‌ۚ أَرَضِيتُم بِٱلْحَيَوٲةِ ٱلدُّنْيَا مِنَ ٱلْأَخِرَةِ‌ۚ فَمَا مَتَـٰعُ ٱلْحَيَوٲةِ ٱلدُّنْيَا فِى ٱلْأَخِرَةِ إِلَّا قَلِيلٌ ٣٨ O believers! What is the matter with you that when you are asked to march forth in the cause of Allah, you cling firmly to ?your? land? Do you prefer the life of this world over the Hereafter? The enjoyment of this worldly life is insignificant compared to that of the Hereafter.