Nahj al-Balagha Hadith n. 124

Selections from The Sayings and Preaching of Amir al-Muminin Ali ibn Abi Talib (Peace Be Upon Him) Including His Replies to Questions and Maxims Expressed for Various Purposes.
Translated by Sayyid Ali Reza

وَقَالَ (عليه ‏السلام):

Amir al-mu'minin, peace be upon him, said:

غَيْرَةُ الْمَرْأَةِ كُفْرٌ

The jealousy of a woman (with co-wives) is heresy,

وَ غَيْرَةُ الرَّجُلِ إِيمَانٌ .

while the jealousy of a man is a part of belief.