أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ أَخَفَّ النَّاسِ صَلاَةً فِي تَمَامٍ ‏.‏

It was narrated from Anas that the Prophet (PBUH) used to make his prayer very brief but still complete when leading people. Translation Not Available

Book Ref: Sunan An Nisai Book 10 Hadith 824
Web Ref:  Sunan An Nisai Vol 1 Book 10 Hadith 825