Musnad Abu Ya'la al-Mawsili 151:47

Abu Abdullah al-Muqaddami narrated to us, al-Mu'tamir narrated to us, Abbad ibn Abbad ibn Alqamah narrated to us, from Abu Mijlaz, that the companions of Ibn Mas'ud were bitten by the cold, so they began to feel shy to come in [their] cloaks and mantles. He missed them, so it was said to him, "Their affair is such and such." So Abu Abd al-Rahman woke up in a mantle, and they said, "Ibn Mas'ud has woken up in his mantle." Then he came on the second day, then he came on the third day. When they saw him in the mantle, they came in their own garments together. He recognized faces that he had missed, so he said, "I heard the Messenger of Allah, peace and blessings of Allah be upon him, say: 'No one will enter Paradise who has in his heart the weight of a mustard seed of pride,' or he said, 'an atom of pride.'"