[15].Surah Al-Hjir [The Rocky Tract]: Ayat 89-93

Ayat 89. And say: "I am indeed a plain warner."

Ayat 90. As We have sent down on the dividers, (Quraish pagans or Jews and Christians).

Ayat 91. Who have made the Qur'an into parts. (i.e. believed in a part and disbelieved in the other).

Ayat 92. So, by your Lord (O Muhammad  [SAWW](PBUH), We shall certainly call all of them to account.

Ayat 93. For all that they used to do. 

Hazrat Abdullah bin Masud (May Allah be pleased with him) reported: I can still recall as if I am seeing the Messenger of Allah  [SAWW](PBUH) resembling one of the Prophets whose people scourged him and shed his blood, while he wiped blood from his face, he said: "O Allah! Forgive my people, because they certainly do not know".

[Al-Bukhari, Chapter 84, Hadith # 63]. 

It mentions the refined character and compassion of the Prophets which has an important lesson for those who preach righteousness. They should be always prepared to face hardships involved in inviting people to the right path and, instead of retaliation, forgive their audience and pray for their guidance. These noble qualities are extremely important for those who are devoted to preach religion.

Lesson : as mentioned above in Surah Al-Hjir Ayat 92.We shall certainly call all of them to account.