Hadith 503770
Chapter 9: Shortening the Prayer - كتاب قصر الصلاة فى السفر
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، أَنَّهُ بَلَغَهُ أَنَّ أَبَا ذَرٍّ، كَانَ يَقُولُ مَسْحُ الْحَصْبَاءِ مَسْحَةً وَاحِدَةً وَتَرْكُهَا خَيْرٌ مِنْ حُمْرِ النَّعَمِ .
Yahya related to me from Malik from Yahya ibn Said that he had heard that Abu Dharr used to say, "Brush away the small stones with one sweep, but if you leave them it is better than a red camel."
Reference Muwatta Malik 503770
USC-MSA web (English) reference : Book 9, Hadith 46