I heard Messenger of Allah ﷺ as saying: There is no divination but the best type is the good omen. It was said to Messenger of Allah ﷺ: What is good omen? Thereupon he said: A good word which one of you hears.
سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ لاَ طِيَرَةَ وَخَيْرُهَا الْفَأْلُ قِيلَ يَا رَسُولَ اللَّهِ وَمَا الْفَأْلُ قَالَ الْكَلِمَةُ الصَّالِحَةُ يَسْمَعُهَا أَحَدُكُمْ