The word(s) "legally" appears 5 time(s) in 3 verse(s) in Quran in Mohsin Khan translation.

(1) O you who believe! Spend of the good things which you have (legally) earned, and of that which We have produced from the earth for you, and do not aim at that which is bad to spend from it, (though) you would not accept it save if you close your eyes and tolerate therein. And know that Allah is Rich (Free of all needs), and Worthy of all praise.

(2) It is not for any Prophet to take illegally a part of booty (Ghulul ), and whosoever deceives his companions as regards the booty, he shall bring forth on the Day of Resurrection that which he took (illegally). Then every person shall be paid in full what he has earned, and they shall not be dealt with unjustly.

(3) Is then one who follows (seeks) the good Pleasure of Allah (by not taking illegally a part of the booty) like the one who draws on himself the Wrath of Allah (by taking a part of the booty illegally - Ghulul)? - his abode is Hell, and worst, indeed is that destination!