Sahih Bukhari
Companions of the Prophet
Volume: 005 / Book Number: 057 / Hadith Number: 17
Narrated Abdullah bin Umar:
That Allah's Apostle said, "Allah will not look on the Day of Judgment at him who drags his robe (behind him) out of pride." Abu Bakr said "One side of my robe slacks down unless I get very cautious about it." Allah's Apostle said, "But you do not do that with a pride."