Prayer (Kitab Al-Salat)
2/109. Chapter:
What May Be Used As A Sutrah By The Praying Person
Sunan Abi Dawud
حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، عَنِ ابْنِ جُرَيْجٍ، عَنْ عَطَاءٍ، قَالَ آخِرَةُ الرَّحْلِ ذِرَاعٌ فَمَا فَوْقَهُ .
'Ata said: The back of the saddle is (about) one cubit (in height) or more than that.
Reference : Sunan Abi Dawud 686In-book reference : Book 2, Hadith 296English translation : Book 2, Hadith 686