Allah tells us of His decree for His righteous servants who are the blessed in this world and in the Hereafter, those who will inherit the earth in this world and in the Hereafter. As Allah says:

He said, 'Az-Zabur means the Tawrah, the Injil and the Qur'an.' Mujahid said, "Az-Zabur means Book." Ibn 'Abbas, Ash-Sha'bi, Al-Hasan, Qatadah and others said, 'Az-Zabur is that which was revealed to Dawud, and Adh-Dhikr is the Tawrah.' Mujahid said: "Az-Zabur means the Books that came after Adh-Dhikr, and Adh-Dhikr is the Mother of the Book (Umm Al-Kitab) which is with Allah." This was also the view of Zayd bin Aslam: "It is the First Book." Ath-Thawri said: "It is Al-Lawh Al-Mahfuz."

Mujahid said, narrating from Ibn 'Abbas, "This means, the land of Paradise." This was also the view of Abu Al-Aliyah, Mujahid, Sa'id bin Jubayr, Ash-Sha'bi, Qatadah, As-Suddi, Abu Salih, Ar-Rabi' bin Anas and Ath-Thawri (may Allah have mercy on them).

means, 'in this Qur'an which We have revealed to Our servant Muhammad, there is a plain Message which is beneficial and is sufficient for a people who worship Allah.' This refers to those who worship Allah in the manner which He has prescribed and which He loves and is pleased with, and they would rather obey Allah than follow the Shaytan or their own desires.

Muhammad is a Mercy to the Worlds

Here Allah tells us that He has made Muhammad a mercy to the 'Alamin, i.e., He sent him as a mercy for all of them (peoples), so whoever accepts this mercy and gives thanks for this blessing, will be happy in this world and in the Hereafter. But whoever rejects it and denies it, will lose out in this world and in the Hereafter, as Allah says:

{Have you not seen those who have changed the blessings of Allah into disbelief, and caused their people to dwell in the house of destruction? Hell, in which they will burn, - and what an evil place to settle in!} [14:28-29]

And Allah says, describing the Qur'an:

{Say: "It is for those who believe, a guide and a healing. And as for those who disbelieve, there is heaviness in their ears, and it is blindness for them. They are those who are called from a place far away."} [41:44]

Muslim reports in his Sahih: Ibn Abi 'Umar told us, Marwan Al-Fazari told us, from Yazid bin Kisan, from Ibn Abi Hazim that Abu Hurayrah said that it was said, "O Messenger of Allah, pray against the idolators." He said:

«I was not sent as a curse, rather I was sent as a mercy.»

This was recorded by Muslim.

Imam Ahmad recorded that 'Amr bin Abi Qurrah Al-Kindi said: "Hudhayfah was in Al-Mada'in and he was mentioning things that the Messenger of Allah had said. Hudhayfah came to Salman and Salman said: 'O Hudhayfah, the Messenger of Allah would sometimes be angry and would speak accordingly, and would sometimes be pleased and would speak accordingly. I know that the Messenger of Allah addressed us and said:

«Any man of my Ummah whom I have insulted or cursed when I was angry - for I am a man from among the sons of Adam, and I get angry just as you do. But Allah has sent me as a Mercy to the Worlds, so I will make that [my anger] into blessings for him on the Day of Resurrection.»'

This was also recorded by Abu Dawud from Ahmad bin Yunus from Za'idah.

It may be asked: what kind of mercy do those who disbelieve in him get? The answer is what Abu Ja'far bin Jarir recorded from Ibn 'Abbas concerning the Ayah:

He said, "Whoever believes in Allah and the Last Day, mercy will be decreed for him in this world and in the Hereafter; whoever does not believe in Allah and His Messenger, will be protected from that which happened to the nations of earthquakes and stoning."