This is a verse from the Quran, specifically the beginning of Surah Al-Inshirah (94 : 1). The complete verse is:

والصبح إذا تنفس

This translates to:

"And by the morning when it breathes forth..."

The translation can vary slightly depending on the interpreter, but the core meaning remains consistent. The verse uses powerful imagery to describe the renewal and hope that comes with the dawn. The "breathing" of the morning is a metaphor for its revitalizing effect.