Sunan an-Nasa'i, Hadith 4408 ⓘ
It was narrated from Abu Ushara' that his father said: "I said: "O Messenger of Allah, is slaughtering only in the throat or upper chest?" He said: 'If you stab it in the thigh, that will suffice,"'(Daif)
أَخْبَرَنَا يَعْقُوبُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ، عَنْ حَمَّادِ بْنِ سَلَمَةَ، عَنْ أَبِي الْعُشَرَاءِ، عَنْ أَبِيهِ، قَالَ قُلْتُ يَا رَسُولَ اللَّهِ أَمَا تَكُونُ الذَّكَاةُ إِلاَّ فِي الْحَلْقِ وَاللَّبَّةِ قَالَ " لَوْ طَعَنْتَ فِي فَخِذِهَا لأَجْزَأَكَ " .
also referenced under: Book 43, Hadith 48 (In-Book) & Volume 5, Book 43, Hadith 4413 (DarusSalam)