It is reported from ʿAbdullāh b. ʿUmar:
When ʿUmar b. Al-Khaṭṭāb arrived in Al-Shām, he said to Abū ʿUbaydah – Allāh be pleased with them: “Take us to your home.” Abū ʿUbaydah said, “And what will you do with my home?” ʿUmar replied, “Just take us there.” Abū ʿUbaydah said, “You only want to cry your eyes out over me.” So he entered his house and saw nothing [by way of furnishings] in it. ʿUmar asked, “Where are your things? I see nothing but rags, a water-skin and a dish (tray), and you are a governor! Do you have food?” So Abū ʿUbaydah went over to an old pail (bucket) and took out some scraps, and ʿUmar began to weep. Abu ʿUbaydah said to him, “I told you you would cry your eyes out over me. O Commander of the Believers, sufficient for you from the dunyā is what delivers you to your place of rest.” ʿUmar said, “The dunyā changed us all except you Abū ʿUbaydah.”
Abū Dāwūd, Kitāb Al-Zuhd article 123, and others.