Musnad Ahmad 27:1011

Rawh ibn ‘Ubadah narrated to us, Ibn Jurayj narrated to us, I heard Muhammad ibn ‘Abbad ibn Ja‘far saying: I ordered Muslim ibn Yasar, the freed slave of Nafi‘ ibn ‘Abd al-Harith, to ask Ibn ‘Umar—and I was sitting between them—what he heard from the Prophet, may Allah bless him and grant him peace, regarding whoever drags his lower garment out of pride, even a little. He said: I heard him say: "Allah, the Almighty and Majestic, will not look at him on the Day of Resurrection."