Allah, the Exalted, says,

﴿و﴾

(And) This is an introductory to what is implied: "Verily, We sent.''

﴿إِلَىعَادٍ أَخَاهُمْ هُودًا﴾

(to the `Ad (people) their brother Hud.) Hud came to them commanding them to worship Allah alone, without any associates. He forbade them from worshipping the idols which they made up, inventing names as gods. He informed them that he did not want any reward from them for his sincere advising and conveying of Allah's Message. He only sought his reward from Allah, the One Who created him.

﴿أَفَلاَ تَعْقِلُونَ﴾

(Will you not then understand) Someone has come calling you to what will benefit your situation in this life and the Hereafter without asking for any wage (from them). Then he commanded them to seek the forgiveness of the One Who is capable of expiating previous sins. He also commanded them to repent for that which they may do in the future. Whoever has these characteristics, Allah will make his sustenance easy for him, grant him ease in his affairs and guard over his situation. For this reason Allah says,

﴿يُرْسِلِ السَّمَآءَ عَلَيْكُمْ مُدْرَاراً ﴾

(He will send you (from the sky) abundant rain,)

﴿قَالُواْ يَهُودُ مَا جِئْتَنَا بِبَيِّنَةٍ وَمَا نَحْنُ بِتَارِكِى ءالِهَتِنَا عَن قَوْلِكَ وَمَا نَحْنُ لَكَ بِمُؤْمِنِينَ - إِن نَّقُولُ إِلاَّ اعْتَرَاكَ بَعْضُ ءَالِهَتِنَا بِسُوءٍ قَالَ إِنِّى أُشْهِدُ اللَّهِ وَاشْهَدُواْ أَنِّى بَرِىءٌ مِّمَّا تُشْرِكُونَ - مِن دُونِهِ فَكِيدُونِى جَمِيعًا ثُمَّ لاَ تُنظِرُونِ - إِنِّى تَوَكَّلْتُ عَلَى اللَّهِ رَبِّى وَرَبِّكُمْ مَّا مِن دَآبَّةٍ إِلاَّ هُوَ ءاخِذٌ بِنَاصِيَتِهَآ إِنَّ رَبِّى عَلَى صِرَطٍ مُّسْتَقِيمٍ ﴾

(53. They said: "O Hud! No evidence have you brought us, and we shall not leave our gods for your (mere) saying! And we are not believers in you.) (54. All that we say is that some of our gods (false deities) have seized you with evil (madness). He said: "I call Allah to witness and bear you witness that I am free from that which you ascribe as partners in worship, ) (55. Besides Him (Allah). So plot against me, all of you, and give me no respite.'') (56. I put my trust in Allah, my Lord and your Lord! There is not a moving creature but He has the grasp of its forelock. Verily, my Lord is on the straight path (the truth).)