Yahya related to me from Malik that Abu Jafar al-Qari said, "I saw Abdullah ibn Umar quickly brush away the small stones from the place where he was going to put his forehead as he was going down into sajda."  

أَنَّهُ قَالَ رَأَيْتُ عَبْدَ اللَّهِ بْنَ عُمَرَ إِذَا أَهْوَى لِيَسْجُدَ مَسَحَ الْحَصْبَاءَ لِمَوْضِعِ جَبْهَتِهِ مَسْحًا خَفِيفًا  

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."  

أَنَّ أَبَا ذَرٍّ كَانَ يَقُولُ مَسْحُ الْحَصْبَاءِ مَسْحَةً وَاحِدَةً وَتَرْكُهَا خَيْرٌ مِنْ حُمْرِ النَّعَمِ