Codladh sámh ort
You could say either, but the traditional good-night phrase is "Sweet dreams."
sweet dreams
To say, "have sweet dreams" in Welsh is "cewch breuddwydion hyfryd"
To say "sweet dreams" in Portuguese, you can say "sonhos doces."
Chalomot Paz or Chalomot Metukim
Sweet dreams translates to drøm sodtin Danish.
sweet dreams are 'de beaux rêves' in French.
You say "Good night and sweet dreams" in Yoruba language of the Western African origin as "od'aro kosi la ala to da".
You can say "Lijepi snovi" in Bosnian, which translates to "sweet dreams" in English.
"মিষ্টি স্বপ্ন" (Mishti Shapno) is how you say "sweet dreams" in Bengali.
You can say "matamis na mga pangarap" in Tagalog, which translates to "sweet dreams" in English.
Sweet dreams translates to punjara swapnangal in Malayalam.