Zayd bin Aslam (may Allah have mercy on him) says that the Prophet (peace and blessings be upon him) said: "Ghayrah (protective jealousy) is part of faith, and pandering (diyathah) is part of hypocrisy." [Da'if]
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الشهادات / 21023