Mishkat al-Masabih 10 The Rites of Pilgrimage كتاب المناسك 126

وَعَنْ أَبِي الزُّبَيْرِ قَالَ: سَمِعْتُ جَابِرَ بْنَ عبدِ اللَّه سُئِلَ عَنْ رُكُوبِ الْهَدْيِ فَقَالَ: سَمِعْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: «ارْكَبْهَا بِالْمَعْرُوفِ إِذَا أُلْجِئْتَ إِلَيْهَا حَتَّى تَجِدَ ظَهْرًا» . رَوَاهُ مُسلم

Abuz Zubair said he heard Jabir b. ‘Abdallah being asked about riding sacrificial animals, to which he replied that he had heard the Prophet say, “Ride on them gently when you have nothing else, till you find a mount.” Muslim transmitted it.