"uthman bin 'Affan said: 'I heard the Messenger of Allah ﷺ say: A day in the cause of Allah is better than a thousand days doing anything else.'" (Using translation from Nasāʾī 3170)
سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ «يَوْمٌ فِي سَبِيلِ اللهِ خَيْرٌ مِنْ أَلْفِ يَوْمٍ فِيمَا سِوَاهُ»