Al-An'aam 6:31

Losers indeed are those who deny the meeting with Allah, until when the Hour comes upon them by surprise, they will say, “Woe to us for having ignored this!” They will bear their burdens on their backs. Terrible indeed is their burden!

Those will have lost who deny the meeting with Allāh, until when the Hour [of resurrection] comes upon them unexpectedly, they will say, "Oh, [how great is] our regret over what we neglected concerning it [i.e., the Hour]," while they bear their burdens [i.e., sins] on their backs. Unquestionably, evil is that which they bear.

31. They indeed are losers who denied their Meeting with Allâh,[4] until all of a sudden, the Hour (signs of death) is on them, and they say: "Alas for us that we gave no thought to it," while they will bear their burdens on their backs; and evil indeed are the burdens that they will bear!

[4] (V.6:31) Narrated Abu Mûsâ رضي الله عنه: The Prophet صلى الله عليه وسلم said, "Whoever loves the Meeting with Allâh, Allâh too loves the Meeting with him; and whoever hates the Meeting with Allâh, Allâh too hates the Meeting with him." (Sahih Al-Bukhâri, Vol.8, Hadîth No.515).

They indeed are losers who deny their meeting with Allah until, when the Hour cometh on them suddenly, they cry: Alas for us, that we neglected it! They bear upon their backs their burdens. Ah, evil is that which they bear!