Abu Dawud said: No one narrates this tradition with continuous chain except Ma'mar.
In-book : Book 4, Hadith 38
English translation : Book 4, Hadith 1231
4. Prayer (Kitab Al-Salat): Detailed Rules of Law about the Prayer during Journey
باب إِذَا أَقَامَ بِأَرْضِ الْعَدُوِّ يَقْصُرُ