King David tells us in Tehillim (55:23) לא יתן לעולם מוט לצדיק, [Hashem] will never give a carrying bar/pole to a tzaddik.
Now, granted, such poles have sometimes been used for nefarious purposes, like when the Spies used them to carry back gigantic fruit from Eretz Yisrael in order to slander the Land (Bamidbar 13:23 and Rashi there). But on the other hand, a מוט was used to carry the Menorah and other sacred vessels of the Mishkan (Bamidbar 4:10, 12), and even the carrying poles of the Aron are sometimes called מוטות (I Divrei Hayamim 15:15, and Rashi to Shemos 25:13).
So why are such bars barred to the tzaddikim?