171وَمَثَلُ الَّذينَ كَفَروا كَمَثَلِ الَّذي يَنعِقُ بِما لا يَسمَعُ إِلّا دُعاءً وَنِداءً ۚ صُمٌّ بُكمٌ عُميٌ فَهُم لا يَعقِلونَ(Irfan-ul-Quran)The example of inviting these disbelievers (to guidance) is like that of a person who calls out to such (an animal) as hears nothing except a shout or cry. Deaf, dumb and blind, they have no sense.