Whenever the Prophet ﷺ started a journey before noon, he used to delay the Zuhr prayer till the time of ʿAsr and then offer them together; and if the sun declined (at noon) he used to offer the Zuhr prayer and then ride (for the journey).
أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَجْمَعُ بَيْنَ هَاتَيْنِ الصَّلاَتَيْنِ فِي السَّفَرِ يَعْنِي الْمَغْرِبَ وَالْعِشَاءَ
Yahya related to me from Malik from Da'ud ibn al-Husayn from al- Araj from Abu Hurayra that the Messenger of Allah ﷺ joined dhuhr and asr on his journey to Tabuk.
أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَجْمَعُ بَيْنَ الظُّهْرِ وَالْعَصْرِ فِي سَفَرِهِ إِلَى تَبُوكَ
Whenever the Prophet ﷺ started a journey before noon, he used to delay the Zuhr prayer till the time of ʿAsr and then offer them together; and if the sun declined (at noon) he used to offer the Zuhr prayer and then ride (for the journey). (Using translation from Bukhārī 1110)
أَنَّ رَسُولَ اللهِ ﷺ كَانَ يَجْمَعُ بَيْنَ هَاتَيْنِ الصَّلَاتَيْنِ فِي السَّفَرِ يَعْنِي الْمَغْرِبَ وَالْعِشَاءَ
[Machine] The Prophet ﷺ used to combine the Maghrib and Isha prayers during rain.
«أَنَّ النَّبِيَّ ﷺ كَانَ يَجْمَعُ بَيْنَ الصَّلَاتَيْنِ بَيْنَ الْمَغْرِبِ وَالْعِشَاءِ فِي الْمَطَرِ»
"عَنْ أنَسٍ: أنَّ رَسُولَ الله ﷺ كَانَ يَجْمَعُ بَيْنَ المَغْرِبِ وَالعِشَاءِ في السَّفَرِ".