حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ دَاوُدَ بْنِ الْحُصَيْنِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يَجْمَعُ بَيْنَ الظُّهْرِ وَالْعَصْرِ فِي سَفَرِهِ إِلَى تَبُوكَ ‏.‏

Yahya related to me from Malik from Da'ud ibn al-Husayn from al-Araj from Abu Hurayra that the Messenger of Allah, may Allah bless himand grant him peace, joined dhuhr and asr on his journey to Tabuk. Translation Not Available

Book reference: Muwatta Imam Malik Book 9 Hadith 329
Web reference: Muwatta Imam Malik Book 9 Hadith 1