Ibn Mas'ud (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) said: "No one has more ghayrah (protective jealousy) than Allah; that is why He has forbidden indecencies. And praise is more beloved to Allah than to anyone."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الشهادات / 21021