It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Hold fast to contentment, for contentment is a wealth that never runs out."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Muhammad bin al-Munkadir (may Allah have mercy on him) except his son Yusuf (may Allah have mercy on him), and no one from Yusuf (may Allah have mercy on him) except Khalid bin Isma'il (may Allah have mercy on him); Abu Yusuf al-Saydalani (may Allah have mercy on him) is alone in it, and this hadith is not narrated from the Messenger of Allah (peace and blessings be upon him) except with this chain."
Hadith Referenceالمعجم الأوسط / باب الميم / 6922
Hadith Gradingمحدثین:إسناده ضعيف جدًّا، فيه خالد بن إسماعيل المخزومي متروك
Hadith Takhrij«قال الهيثمي: فيه خالد بن إسماعيل المخزومي وهو متروك «مجمع الزوائد ومنبع الفوائد، ج 10، ص 256»»