Anas (May Allah be pleased with him) said:
The Messenger of Allah ﷺ said, "Not the transmission of disease of one person to another and no evil omen, but I am pleased with good omens." He was asked: "What is good omen?" He replied, "A good word."

[Al-Bukhari and Muslim].

عن أنس رضي الله عنه قال: قال رسول الله ﷺ : "لا عدوى ولا طِيَرة ويعجبني الفأل" قالوا: وما الفأل؟ قال: "كلمة طيبة" ((متفق عليه)).