Sahih Muslim
The Book Pertaining to Clothes and Decoration (Kitab Al-Libas wal-Zinah)
Book Number: 024 / Hadith Number: 5197
Muslim b. Yannaq reported that Ibn Umar saw a person trailing his lower garment, whereupon he said: From whom do you come? He described his relationship (with the tribe he belonged) and it was found that he belonged to the tribe of Laith. Ibn. Umar recognised him and said: I heard Allah's Messenger (may peace be upon him) with these two ears of mine saying: He who trailed his lower garment with no other intention but pride, Allah would not look toward him on the Day of Resurrection.