عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ قَالَ: سُئِلَ أُسَامَةُ بْنُ زَيْدٍ: كَيْفَ كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَسِيرُ فِي حَجَّةِ الْوَدَاعِ حِينَ دَفَعَ؟ قَالَ: كَانَ يَسِيرُ الْعُنُق فَإِذا وجد فجوة نَص

‘Abdallah b. Mas'ud said he never saw God’s messenger observe a prayer out of its proper time with the exception of two, the sunset and the evening prayer, which he combined, and the dawn prayer which he observed that day(i.e. al-Muzdalifa) before its proper time.Bukhari and Muslim.