Literature Reference: 筋力销磨实事空。—— 《微之就拜尚书居易续除刑部因书贺意兼咏离怀》 Strength is worn away, and real achievements are but empty. Source from 'Wei Zhi Jiu Bai Shang Shu Ju Yi Xu Chu Xing Bu Yin Shu He Yi Jian Yong Li Huai'.
销:
Expenses
磨: Tempering. Honing.
Meaning: Xiao Mo implies the gradual wear of strength, the passage of time, and the fading of things.