يَا أَيُّهَا النَّبِيُّ حَرِّضِ الْمُوْمِنِينَ عَلَى الْقِتَالِ
...
O Prophet! Urge the believers to fight,
encouraged and called them to fight.
The Messenger of Allah used to encourage the Companions to fight when they faced the enemy. On the day of Badr when the idolators came with their forces and supplies, he said to his Companions,
قُومُوا إِلَى جَنَّةٍ عَرْضُهَا السَّمَوَاتُ وَالاَْرْض
Get ready and march forth towards a Paradise as wide as the heavens and earth.
Umayr bin Al-Humam said, "As wide as the heavens and earth!"
The Messenger said,
نَعَم
(Yes).
Umayr said, "Excellent! Excellent!"
The Messenger asked him,
مَا يَحْمِلُكَ عَلَى قَوْلِكَ بَخٍ بَخ
What makes you say, `Excellent! Excellent!'
He said, "The hope that I might be one of its dwellers."
The Prophet said,
فَإِنَّكَ مِنْ أَهْلِهَا
You are one of its people.
Umayr went ahead, broke the scabbard of his sword, took some dates and started eating from them. He then threw the dates from his hand, saying, "Verily, if I lived until I finished eating these dates, then it is indeed a long life."
He went ahead, fought and was killed, may Allah be pleased with him.
Allah said next, commanding the believers and conveying good news to them,
...
إِن يَكُن مِّنكُمْ عِشْرُونَ صَابِرُونَ يَغْلِبُواْ مِيَتَيْنِ وَإِن يَكُن مِّنكُم مِّيَةٌ يَغْلِبُواْ أَلْفًا مِّنَ الَّذِينَ كَفَرُواْ
...
If there are twenty steadfast persons among you, they will overcome two hundred, and if there be a hundred steadfast persons, they will overcome a thousand of those who disbelieve.
The Ayah says, one Muslim should endure ten disbelievers.
Allah abrogated this part later on, but the good news remained.
...
بِأَنَّهُمْ قَوْمٌ لاَّ يَفْقَهُونَ
because they (the disbelievers) are people who do not understand.
Abdullah bin Al-Mubarak said that Jarir bin Hazim narrated to them that, Az-Zubayr bin Al-Khirrit narrated to him, from Ikrimah, from Ibn Abbas,
"When this verse was revealed,
إِن يَكُن مِّنكُمْ عِشْرُونَ صَابِرُونَ يَغْلِبُواْ مِيَتَيْن
(If there are twenty steadfast persons among you, they will overcome two hundred...) it became difficult for the Muslims, when Allah commanded that one Muslim is required to endure ten idolators. Soon after, this matter was made easy,