Muwatta Imam Malik Book of Shortening the Prayer, Hadith 46

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."

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، أَنَّهُ بَلَغَهُ أَنَّ أَبَا ذَرٍّ، كَانَ يَقُولُ مَسْحُ الْحَصْبَاءِ مَسْحَةً وَاحِدَةً وَتَرْكُهَا خَيْرٌ مِنْ حُمْرِ النَّعَمِ .