حُبُّكَ الشَّيْءَ يُعْمِي وَيُصِمُّ
Your love of something can make you blind and deaf to its faults.
Source: Abu Dawud.
“Blind and deaf” is figurative here, not a description of physical sight or hearing. Strong affection can make someone unwilling to notice a flaw or listen to valid criticism of a favored person or thing.
حُبُّكَ means “your love,” while الشَّيْءَ is the thing being loved. يُعْمِي means “makes blind” and يُصِمُّ “makes deaf”; both are imperfect verbs. The language uses figurative imagery to describe impaired judgment.
Affection may be good in itself. Fairness still requires listening to reliable information, acknowledging mistakes, and allowing correction.