Hadrat Abu Huraira (Radi Allaahu Ta’ala Anhu) narrated that the Messenger of ALLAH (Sallallahu Alaihi Wa Sallam) said:

The beauty and perfection of a man’s Islam is that he should refrain from useless and purposeless acts.’

[Ma’arif-ul-Hadis, Ibn Majah: 2, Tirmizi]