The Women - 4:78
"Death overtakes you wherever you are, even if you are in strong fortresses. If something good befalls them, they say, "It is from Allah". And if evil befalls them, they say, "It is from you."Say, "It is all from Allah."What is happening to this people that they hardly understand any hadith (saying)!"
A reference to the hypocrites who make various excuses and stay back from the battle:
The Family Of Imran/3:140
If a hardship has touched you, a similar hardship has touched the enemy community. We turn over such days among the people so that Allah may distinguish the true believers and make some of you witnesses. Allah does not love the wrongdoers.
The Family Of Imran/3:141
Allah thus strengthens the believers and breaks the pride of the disbelievers.
The Family Of Imran/3:154
"Then after that sorrow, He sent down upon you a safe sleep which calmed a group of you. Some of you were self-absorbed and self-centered, forming false ideas about Allah, as in the days of ignorance, and saying, "Do we have any authority in this matter?"Say, "All authority belongs to Allah."They were hiding in their hearts what they did not reveal to you. They say, "If we had any authority, we would not have been killed here."Say, "Even if you had been in your homes, those among you who were appointed to die would have crawled to the place where they would have fallen."Allah thus tries what is in your breasts and purifies what is in your hearts. Allah knows the most secret thoughts."
The Family Of Imran/3:166
What happened to you on the day when the two armies clashed was by Allah´s Leave. Thus are the believers distinguished.
The Family Of Imran/3:167
"Thus are the hypocrites exposed. When it was said to them, "Come, fight in the way of Allah or contribute", they said, "If we knew about war, we would have joined you". At that moment they were closer to disbelief than to faith. They say with their mouths what is not in their hearts. But Allah knows very well what they conceal."
The Women/4:72
"There are those among you who are slow. If a calamity befalls you, he says, "Allah has been good to me so that I did not fall a martyr with them"."
The Women/4:141
"They keep watch over you. When a victory comes to you from Allah, they say, "Were we not with you?"And when it is the turn of the disbelievers to win, they say, "Did we not protect you from the believers by supporting you?"On the Day of Resurrection, Allah will judge between you. Allah will not give the disbelievers the opportunity to rule over the believers."
The Spoils of War/8:41
If you believe in Allah and in that which We sent down to Our servant on the Day of separation, on the Day when the two armies met, then know that one-fifth of every booty that you take belongs to Allah and His Messenger. This share is for the relatives, orphans, the poor and the stranded. Allah is the All-Sufficient.
The Repentance/9:16
Do you think that you will be left until Allah knows and distinguishes between those among you who strive hard for Him and those who take none as close friends except Allah and His Messenger and the believers? Allah is All-Knowing of what you do.
The Repentance/9:42
"If it had been a near benefit and a journey of moderate length, they would have followed you, but the way seemed far to them. They will swear by Allah: "Had we been able, we would have gone out with you."Thus they ruin themselves. Allah knows that they are liars."
The Repentance/9:43
Allah has forgiven you: Why did you allow them before the truthful and the liars became clear to you?
The Repentance/9:44
Those who believe in Allah and the Last Day do not ask your permission (to escape) from striving with their money and their lives. Allah is All-Knowing of the righteous.
Muhammad/47:20
"The believers used to say, "What if a period (permitting war) were sent down?"But when a clear surah is sent down and war is mentioned in it, you see those in whose hearts is a disease looking at you as one faints for fear of death. It is suitable for them,"
The Iron/57:25
We sent Our messengers with clear proofs and sent down with them the Book and the Law so that the people may observe justice. And We sent down iron, which has great strength and benefits for the people, so that Allah may distinguish between those who support Him and His messenger in faith. Allah is the Mighty, the Superior.
The Banishment/59:2
It is He Who brought out the disbelievers from the people of the Book for the first exile. You never expected them to come out. They thought that their fortresses would protect them from Allah. But Allah came to them from a place they did not expect and struck fear in their hearts. So they destroy their houses with their own hands and the hands of the believers. O people of vision, take an example.