(2) Prayer (Kitab Al-Salat)
كتاب الصلاة
(308) Chapter: Prostrating On The Nose And Forehead
(159) باب السُّجُودِ عَلَى الأَنْفِ وَالْجَبْهَةِ
Sunan Abi Dawud 895 
The above mentioned tradition has also been transmitted by Ma’mar through a different chain of narrators to the same effect.
حَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، عَنْ مَعْمَرٍ، نَحْوَهُ ‏.‏
Reference : Sunan Abi Dawud 895
In-book reference : Book 2, Hadith 505
English translation : Book 2, Hadith 894