At·tá lá i ndegaid alaile.

At·tá lá i ndegaid alaile.

(is * day * in * following * of another)

One day follows another.
Tomorrow is another day.

In the tale "Tochmarc Étaíne" Ailill feels remorse because he fell asleep and missed his tryst with Étaín. She reassures him, saying "Ní ba son, ata la i ndegaid aloile." (Never mind. There's always tomorrow.)