(104) باب مَا يَسْتُرُ الْمُصَلِّي
'Ata said:
The back of the saddle is (about) one cubit (in height) or more than that.
Reference: Sunan Abi Dawud 686
In-book reference: Book 2, Hadith 296
English translation: Book 2, Hadith 686