The Cow - 2:121
Those who follow the Book which We have given them properly will believe in it (the Qur´an), but those who disbelieve will lose.
What is the loss for the disbelievers?
The Spoils of War/8:37
So Allah distinguishes the evil from the good, and He will pile up the evil ones and send them to Hell. Those are the losers.
The Cattle/6:31
"The losers are those who deny the meeting with Allah. When that moment (the end of the world) suddenly overtakes them, they will say, carrying their burdens of sin on their backs, "Woe to us for wasting our life therein! How evil is that which they bear!"
The Pilgrimage/22:11
Among mankind there are some who serve Allah conditionally. He rejoices when his affairs go well, but when trouble befalls him, he turns away. Thus he loses the world and the Hereafter. That is the real loss.
Council/42:45
"You will see them looking around them out of the corner of their eyes as they are presented to the Fire, humiliated and with their heads bowed. The believers will say, "The real losers are those who lose themselves and their families on the Day of Resurrection. The wrongdoers are condemned to a permanent torment"."
Explained in Detail/41:23
This thought of yours about your Lord led you astray and you were of the losers.
Explained in Detail/41:24
If they endure, their abode is the Fire. But if they wish to be tolerated, their apologies will not be accepted.
Prophet Abraham/14:18
The deeds of those who disbelieve in their Lord are like ashes scattered by the wind on a stormy day. They will gain nothing of what they have earned. That is the real loss.
The Cow/2:264
Believers! Do not waste your charity by insulting and persecuting, like the one who does not believe in Allah and the Last Day but gives charity to show off to the people. The example of such behavior is like a rock on which dust has accumulated so that a heavy downpour leaves it bare. They will gain nothing from what they have done. Allah does not guide the disbelieving people.