حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا أَبُو مُعَاوِيَةَ، عَنِ الْمِسْحَاجِ بْنِ مُوسَى، قَالَ قُلْتُ لأَنَسِ بْنِ مَالِكٍ حَدِّثْنَا مَا، سَمِعْتَ مِنْ، رَسُولِ اللَّهِ صلى الله عليه وسلم ‏.‏ قَالَ كُنَّا إِذَا كُنَّا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي السَّفَرِ فَقُلْنَا زَالَتِ الشَّمْسُ أَوْ لَمْ تَزُلْ صَلَّى الظُّهْرَ ثُمَّ ارْتَحَلَ ‏.‏

Narrated Mishaj b. Musa: I asked Anas b. Malik: Narrate to us what you heard the Messenger of Allah (PBUH) say. He said: When we travelled along with the Messenger of Allah (PBUH), we would say: Did the sun pass the meridian or not? But he (the Prophet) would offer the noon prayer and then proceed. Translation Not Available

Book reference: Sunan Abi Dawud Book 4 Hadith 1204
Web reference: Sunan Abi Dawud Book 4 Hadith 1200