Abdullah bin Umar reported,

The Prophet ﷺ prayed the traveler's prayer at Mina, and so did Abu Bakr, Umar, and Uthman, for eight years, or he said six years.Hafs said that Ibn Umar used to pray two units of prayer at Mina and then go to his bed.I said to him, "Uncle, what if you were to pray two more units after it?"He replied, "If I did that, I would be praying the prayer in full."The other two narrators did not mention "at Mina" in the hadith. Instead they said, "He prayed while traveling."

Muslim 1595

Sahih

و حدثناه يحيى بن حبيب حدثنا خالد يعني ابن الحارث ح و حدثنا ابن المثنى قال حدثني عبد الصمد قالا حدثنا شعبة بهذا الإسناد ولم يقولا في الحديث بمنى ولكن قالا صلى في السفر

مسلم 1595صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Travelers' prayer and its shortening
Chapter
Shortening prayer at Mina
Numbering
Darussalam 1595
Muslim 1595