Abdah bin Sulaiman al-Klabi عبدة بن سليمان الكلابي أبو محمد الكوفي · The Book on Traveling

"Ibn Umar had been requested to urgently attend to one of his wives, so he hurried en route and delayed Maghrib until the twilight disappeared, then he dismounted to combine them (the prayers). Then he informed them that the Messenger of Allah would do that when he was in a hurry on a trip."

"That the Prophet ordered." And he mentioned similarly.