Muhammad 47:20

Those who believe say, “If only a Chapter were sent down [about fighting]? But when a precise Chapter is sent down and fighting[15] is mentioned therein, you see those in whose hearts is sickness looking at you like someone who is about to die. It would have been better for them[16]

[15] The believers longed for a Qur’anic revelation that would give them permission to fight their enemies.
[16] It could also mean “Woe to them!” if disconnected from the next verse.

Those who believe say, "Why has a sūrah[1502] not been sent down?" But when a precise sūrah is revealed and battle is mentioned therein, you see those in whose hearts is disease [i.e., hypocrisy] looking at you with a look of one overcome by death. And more appropriate for them[1503] [would have been]

[1502] i.e., one in which permission is given the believers to fight their enemies.
[1503] The words "awlā lahum" can also be interpreted as "woe to them!" In that case, the following verse would begin, "[Better for them would have been] obedience and good words."

20. Those who believe say: "Why is not a Sûrah (chapter of the Qur’ân) sent down (for us)? But when a decisive Sûrah (explaining and ordering things) is sent down, and fighting (Jihâd - holy fighting in Allâh’s cause) is mentioned (i.e. ordained) therein, you will see those in whose hearts is a disease (of hypocrisy) looking at you with a look of one fainting to death. But it was better for them (hypocrites, to listen to Allâh and to obey Him).

And those who believe say: If only a surah were revealed! But when a decisive surah is revealed and war is mentioned therein, thou seest those in whose hearts is a disease looking at thee with the look of men fainting unto death. Therefor woe unto them!