Surah Al-Layl Verse 4

6162 There are wide contrasts in the nature and aims of men. These may be broadly divided into two classes, good and evil. As night replaces day on account of certain relative positions, but does not annihilate it, so evil may for a time obscure good but cannot blot it out. Again, night in certain circumstances (e.g. for rest) is a blessing; do certain things, which seek the highest truth from the light of Allah. Considering these contrasts, do not be surprised or depressed. Men's immediate aims may be different. The duty of all is to seek the one true Light.