[35].Surah Fatir [The Originator of Creation]: Ayat 42

৪২. তারা জোর শপথ করে বলত, তাদের কাছে কোন সতর্ককারী আগমন করলে তারা অন্য যে কোন সম্প্রদায় অপেক্ষা অধিকতর সৎপথে চলবে। অতঃপর যখন তাদের কাছে সতর্ককারী আগমন করল, তখন তাদের ঘৃণাই কেবল বেড়ে গেল।

Ayat 42. And they (Pagans of Makkah) swore by Allah their most binding oath, that if a warner came to them, they would be more guided than any of the nations (before them), yet when a warner (Muhammad  [SAWW](PBUH), came to them, it increased in them nothing but flight (from the truth),

Tafseer of Surah Fatir Ayat 42. They swore their strongest oaths by Allah that if a warner came to them, they would follow his guidance better than any (other) of the Peoples: But when a warner came to them, it has only increased their flight (from righteousness), - Cf. 6:157. In the first instance this referred to the Quraysh. Their attitude to the People of the Book had been one of lofty superiority or of insincere excuses. They twitted the Jews and Christians with deviating from their own lights and their own revelations; and for themselves, they said they had received no direct revelation from Allah, or they would have shown themselves the most amenable to discipline, the most ready to follow Allah's Law. This was before the Prophet received his mission from Allah. When he received it and announced it, they turned away from it. They fled from it and put a greater and greater distance between it and themselves. But this is the way of all sinners. They find much to carp at in others, and much to excuse in themselves. But when all grounds for excuse are removed, they will be found, not nearer, but farther and farther away from truth and righteousness.

Hazrat Abu Sufyan (May Allah be pleased with him) reported, in course of his detailed narration about Heraclius when the latter questioned him about the teachings of the Prophet  [SAWW](PBUH) He said that: He   [SAWW](PBUH) told (us): "Worship Allah Alone and do not associate a thing with Him; and give up all that your ancestors said.”He also commands us to perform Salat (prayers), to speak the truth, to observe modesty and to strengthen the ties of kinship. [Al-Bukhari Book 01, Chapter 01, Hadith # 06]. 

Lesson: as mentioned above in Surah Fatir Ayat 42. And they (Pagans of Makkah) swore by Allah their most binding oath, that if a warner came to them, they would be more guided than any of the nations” In this Hadith an enemy of the Prophet  [SAWW](PBUH) acknowledges the veracity of the Prophet's teaching, because Abu Sufyan (May Allah be pleased with him) made this admission when he was a pagan.