The word(s) "labour" appears 6 time(s) in 6 verse(s) in Quran in Abdullah Yusuf Ali translation.

(1) Those who slander such of the believers as give themselves freely to (deeds of) charity, as well as such as can find nothing to give except the fruits of their labour,- and throw ridicule on them,- Allah will throw back their ridicule on them: and they shall have a grievous penalty.

(2) He said: "(The power) in which my Lord has established me is better (than tribute): Help me therefore with strength (and labour): I will erect a strong barrier between you and them:

(3) "Indeed are we shut out (of the fruits of our labour)"

(4) "Indeed we are shut out (of the fruits of our labour)!"

(5) labouring (hard), weary,-

(6) Therefore, when thou art free (from thine immediate task), still labour hard,