Hadith 77

Bulugh al-Maram

Book 2: The Book of Prayer
Hadith 77
زَادَ اَلْبُخَارِيُّ : { يُومِئُ بِرَأْسِهِ , وَلَمْ يَكُنْ يَصْنَعُهُ فِي اَلْمَكْتُوبَةِ } 1‏ .‏
al-Bukhari added:

"Making gestures with his head and he did not do that (pray while mounted) with obligatory prayers."