مُوَطَّأُ مَالِكٍ
Muwatta Malik 377
Shortening the Prayer
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."
Arabic/English book reference: Book 9, Hadith 46