Musnad Abu Ya'la al-Mawsili 147:64

Sa'id ibn Abi al-Rabi' narrated to us, he said: 'Isa ibn Sadaqah narrated to me, he said: I heard Anas saying: "Fear Allah and render the trusts to those to whom they are due." Abu Ya'la said: And my strongest assumption is that al-Mu'alla narrated it to me from 'Isa, but I did not find Ja'far ibn 'Amr ibn Umayyah from Anas.