ENOfficial
Abu Huraira said: I have seen nothing more beautiful than God's messenger who looked as if the sun were pursuing its course in his face. And I have seen no one who walked more quickly than God's messenger, for it seemed as if the earth were being contracted for him. We would exert ourselves, but he was unruffled. Tirmidhi transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ أَبِي هُرَيْرَةَ قَالَ: مَا رَأَيْتُ شَيْئًا أَحْسَنَ مِنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَأَن الشَّمْس تجْرِي على وَجْهِهِ وَمَا رَأَيْتُ أَحَدًا أَسْرَعَ فِي مَشْيِهِ مِنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَأَنَّمَا الْأَرْضُ تُطْوَى لَهُ إِنَّا لَنُجْهِدُ أَنْفُسَنَا وَإنَّهُ لغير مكترث. رَوَاهُ التِّرْمِذِيّ
sunnah.com