Shaykh Ibn Uthaymeen was asked:
Is a good omen (الفأل ) only in a good word?
“This is an example. This is only an example. A good omen can be a good word, or something visible, or well-known. Three [types]”.
[Sharh Saheeh Muslim-Kitab an-Nikah, wal-Radaa’a, wat-Talaaq, wal-La’aan, wal-‘Itq tape no. 3a].
This is in reference to the following Hadith:
عن أنس رضي الله عنه قال: قال رسول الله صلى الله عليه وسلم : لا عدوى ولا طِيَرة ويعجبني الفأل قالوا: وما الفأل؟ قال: كلمة طيبة
Anas (May Allah be pleased with him) said:
The Messenger of Allah (ﷺ) said, “There is no ‘Adha nor Tiyara, but I am pleased with good omens.” He was asked: “What is good omen?” He replied, “A good word.”
[Bukhari and Muslim]
Faisal bin Abdul Qaadir bin Hassan