[15].Surah Al-Hjir [The Rocky Tract]: Ayat 5-6

Ayat 5. No nation can anticipate or outstrip its term of destruction, nor can delay it.

Ayat 6. And they say to whom the Dhikr (the Quran) has been sent down! Verily, you are a mad man.

Hazrat Abu Musa Al-Ashari (May Allah be pleased with him) reported: The Messenger of Allah  [SAWW](PBUH)  said, "When Allah intends to show mercy to a people, He collects their Prophet before them and makes him a herald to happiness for them in the Hereafter; and when He intends to destroy a people, He punishes them while their Prophet is alive, and destroys them while he is alive and watches them and makes him witness their destruction because they disbelieved in him and disobeyed his commands".

[Muslim Book.30, Chapter 08, Hadith # 5679]. 

Lesson : as mentioned above in Surah Al-Hjir Ayat 05. "No nation can anticipate or outstrip its term of destruction" This Hadith tells us about a Divine law in respect of Prophets, which is meant to deter people from opposing the Prophet (PBUH) and commands us to follow his footsteps, so that we can benefit from his intercession on the Day of Resurrection.