It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) heard a man swearing by al-amanah (trust), and he said: "Are you not the one who swears by al-amanah?!"
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Yunus bin Ubayd (may Allah have mercy on him) except Abd al-Warith, and Hafs bin Umar al-Hawdi is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب السين / 3657
Hadith Gradingمحدثین:رجاله ثقات
Hadith Takhrij«قال الهيثمي: رواه الطبراني في الأوسط ورجاله ثقات «مجمع الزوائد ومنبع الفوائد، ج 4، ص 178»»