It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said to Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him): "O Mu'adh, a grateful heart, a tongue that remembers (Allah), and a righteous wife who helps you in the affairs of your world and your religion: this is the best of what people can acquire."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7797