‘Abdallah b. ‘Amr told that when a man wearing two red garments passed the Prophet (ﷺ) and gave him a greeting he did not respond to his greeting. Tirmidhi and Abu Dawud transmitted it.

وَعَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو قَالَ: مَرَّ رَجُلٌ وَعَلَيْهِ ثَوْبَانِ أَحْمَرَانِ فَسَلَّمَ عَلَى النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَلَمْ يَرُدَّ عَلَيْهِ. رَوَاهُ التِّرْمِذِيّ وَأَبُو دَاوُد