In Irish it's "slán le saol beo"
In Irish Gaelic Slán (pronounced "slawn") would be goodbye.
In Irish:Slán [slawn]
Slán Alena
It's Gaelic -- probably what was meant was "Mar sin leibh an-drasta" which means "Goodbye, for now". "Mar sin leibh" = "Goodbye" + "an-drasta" = "for now". This is in Scottish Gaelic (Gàidhlig), not Irish Gaelic (Gaeilge)
Beannacht leat, a Dhaid.
Slàn leat (familiar and singular)
Caith do bheatha mar is cóir.
Slán go fóill a thaisce
Life in Gaelic is Beatha - pronounced be-ha. Whiskey in Gaelic is"Uisge Beatha", meaning the "water of life"
Mar sin leat an-dràsta! goodbye for now! Slàn leat an-dràsta goodbye for now Slàn leat! (response) Slàn agad!
In Scottish Gaelic, "goodbye" is expressed as "slàn leat" when speaking to one person, and "slàn leibh" when addressing multiple people or speaking formally. "Good luck" translates to "gura math a thèid leat." These phrases reflect the warm and supportive nature of Gaelic farewells.
In Scots Gaelic slàn means 'healthy'; in Irish it is spelled slán. Often used as 'goodbye' from 'slàn leat/slán leat'.