Whoso blinds himself to the Remembrance of the All-merciful, to him We assign a Satan for comrade; 36 Surely the (devils) obstruct them from the path, though they think they are rightly guided, -- 37 Until, when he comes to Us [at Judgement], he says [to his companion], "Oh, I wish there was between me and you the distance between the east and west - how wretched a companion." 38 They will be told on the Day of Judgment, "Regret will never be of any benefit to you. You have done injustice to your souls and you will share the torment". 39 Then will you make the deaf hear, [O Muhammad], or guide the blind or he who is in clear error? 40 Whether We take thee away, We shall take vengeance upon them, 41 or show them to you suffering the torment with which We had threatened them. We are certainly dominant over them all. 42 So hold fast to all that has been revealed to thee: for, behold, thou art on a straight way; 43 Surely it is a Reminder to thee and to thy people; and assuredly you will be questioned. 44 And ask those of Our messengers whom We sent before thee: Did We ever appoint gods to be worshipped beside the Beneficent? 45