Narrated Abu Huraira
The Prophet (ﷺ) said, "There is no Tiyara and the best omen is the Fal," Somebody said, "What is the Fal, O Allah's Messenger (ﷺ)?" He said, "A good word that one of you hears (and takes as a good omen).
Narrated Anas
The Prophet (ﷺ) said, "No 'Adwa (no contagious disease is conveyed to others without Allah's permission), nor Tiyara, but I like the good Fal, i.e., the good word."