"Love it your lover appropriately because it could be, someday he will be the person you hate the most and hate the person you hate appropriately because it could be that the person you hate will one day become the person you love the most. " (Narrated by Tirmidhi, Thabrani, and Baihaqi).
Do not over-love someone you love, that's only natural, because the possibility that one day the loved one will become your enemy. Likewise, on the other hand, don't overdo it in hating people who you don't like, who are mediocre because they might become your lover.
The meaning of this hadith is in line with His word which means:
"(So be patient) because maybe you don't like something, even though Allah has made it a lot of good for it (QS. An-Nisa: 19). *
