Sunan an-Nasa'i, Hadith 3118 ⓘ
It was narrated that Sahl bin Sa'd said: "The Messenger of Allah said: 'Going out before noon or after noon, in the cause of Allah, the Mighty and Sublime, is better than this world and everything in it.'"
أَخْبَرَنَا عَبْدَةُ بْنُ عَبْدِ اللَّهِ، قَالَ حَدَّثَنَا حُسَيْنُ بْنُ عَلِيٍّ، عَنْ زَائِدَةَ، عَنْ سُفْيَانَ، عَنْ أَبِي حَازِمٍ، عَنْ سَهْلِ بْنِ سَعْدٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " الْغَدْوَةُ وَالرَّوْحَةُ فِي سَبِيلِ اللَّهِ عَزَّ وَجَلَّ أَفْضَلُ مِنَ الدُّنْيَا وَمَا فِيهَا " .
also referenced under: Book 25, Hadith 34 (In-Book) & Volume 4, Book 25, Hadith 3120 (DarusSalam)