(Daif) Abu 'Abdur-Rahman (An-Nasai) said: This is Mursal and it is not confirmed.
In-book : Book 46, Hadith 114
English translation : Vol. 5, Book 46, Hadith 4987
46. The Book of Cutting off the Hand of the Thief
باب مَوْقِفِ الإِمَامِ إِذَا كَانُوا ثَلاَثَةً وَالاِخْتِلاَفِ فِي ذَلِكَ