I heard Messenger of Allah ﷺ saying, "While I was sleeping, the people were presented to me (in a dream). They were wearing shirts, some of which were merely covering their (chests). and some were a bit longer. ʿUmar was presented before me and his shirt was so long that he was dragging it." They asked, "How have you interpreted it, O Messenger of Allah ﷺ?" He said, "Religion."
عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ ؓ قَالَ سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ بَيْنَا أَنَا نَائِمٌ رَأَيْتُ النَّاسَ عُرِضُوا عَلَىَّ وَعَلَيْهِمْ قُمُصٌ فَمِنْهَا مَا يَبْلُغُ الثَّدْىَ وَمِنْهَا مَا يَبْلُغُ دُونَ ذَلِكَ وَعُرِضَ عَلَىَّ عُمَرُ وَعَلَيْهِ قَمِيصٌ اجْتَرَّهُ قَالُوا فَمَا أَوَّلْتَهُ يَا رَسُولَ اللَّهِ قَالَ الدِّينَ