SURA 110. Nasr, or Help
1. When comes the Help of Allah, and Victory,
2. And thou dost see the people enter Allah’s Religion in crowds,
3. Celebrate the praises of thy Lord, and pray for His Forgiveness: For He is
Oft-Returning [in Grace and Mercy].
Surah Nasr is a guarantee from Allah that victory will come for the Prophet sallallahu alayhi wasallam and the Prophet is told of the multitudes of people who will accept Islam. However, the believers are reminded to remain humble at victory and to glorify Allah, seek His forgiveness and turn back to Him!
Allah in this Surah had informed His Messenger (upon whom be peace) that when Islam attained complete victory in Arabia and the people started entering Allah’s religion in great numbers, it would mean that the mission for which he had been sent to the world, had been fulfilled. Then, he was enjoined to busy himself in praising and glorifying Allah by Whose bounty he had been able to accomplish such a great task, and should implore Him to forgive whatever failings and frailties he might have shown in the performance of the service.
source: Sayyid Abul Ala Maududi – Tafhim al-Qur’an – The Meaning of the Qur’an
The Prophet’s life in Makkah after Islam was full of misery because of the reaction of the Quraysh. They tortured the companions, cursed the Prophet and spread propaganda against him. Finally they were prepared to kill him when the Prophet safely migrated from there to Madinah. Only in a matter of ten years, the situation had turned upside down. The Prophet had conquered Makkah, and all the mushrikeen who had abused the Prophet and the Companions were at the mercy of the Prophet, whom he forgave. All of this was the promise of Allah delivered. The promise, ‘When God’s help comes and He opens up your way’ was fulfilled. The generosity and the kindness of the Prophet ﷺ won him many hearts and tribes upon tribes were coming into Islam as Allah had prophesized, ‘when you see people embracing God’s faith in crowds’.
Very often when we win or achieve something we celebrate boastfully and arrogantly. Yet the Prophet ﷺ upon victory entered the city, head bowed, and making du’a to Allah, as Allah had commanded, ‘celebrate the praise of your Lord and ask His forgiveness: He is always ready to accept repentance.’
Source: Understand the Quran