פת במלח תאכל ומים במשורה תשתה ועל הארץ תישן, ואם אתה עושה כן אשריך בעולם הזה וטוב לך לעולם הבא (אבות ו:ד)

When Maran, Rebbe Yissocher Dov of Belz zt”l wandered from place to place during WWI, he arrived at a train station in Hungary, where they needed to wait seven hours for the next train. The station was an open area with no seating.  Maran removed his fur overcoat, placed it on the floor, and sat down.  The scene was very peculiar for his chassidim, to see Maran sitting on the floor.  Noticing their bewildered looks, Maran explained, “The Mishna says ועל הארץ תישן, ואם אתה עושה כן אשריך בעולם הזה – what does it mean אשריך בעולם הזה? What kind of עולם הזה is it that one needs to sleep on the floor? However, If a person comes to a situation where he needs to serve Hashem ועל הארץ תישן  – and if he does so ואם אתה עושה כן, and doesn’t complain to Hashem, then  אשריך בעולם הזה  – because he merits to understand that everything is for his good.