Sayyiduna Amir bin Rabi’ah (may Allah be pleased with him) narrated that I myself saw that the Messenger of Allah (peace and blessings of Allah be upon him) used to offer voluntary prayers during travel at night on his mount, facing in whatever direction it took him.
Hadith Referenceاللؤلؤ والمرجان / كتاب صلاة المسافرين وقصرها / 407
Hadith Gradingمحدثین:«صحیح»
Hadith Takhrij«صحیح، أخرجه البخاري في: 18 كتاب تقصير الصلاة: 12 باب تطوع في السفر في غير دبر الصلاة وقبلها»