Abdullah bin Umar reported,

The Prophet ﷺ prayed at Mina the prayer of a traveler, and so did Abu Bakr and Umar, and Uthman for eight years, or he said six years.Hafs said, Ibn Umar used to pray two rakats at Mina and then return to his bed.I said, "Uncle, if only you would pray two more rakats after it."He replied, "If I did so, I would have completed the prayer in full."

Muslim 1594

Sahih

و حدثنا عبيد الله بن معاذ حدثنا أبي حدثنا شعبة عن خبيب بن عبد الرحمن سمع حفص بن عاصم

عن ابن عمر قال

صلى النبي ﷺ بمنى صلاة المسافر وأبو بكر وعمر وعثمان ثماني سنين أو قال ست سنين قال حفص وكان ابن عمر يصلي بمنى ركعتين ثم يأتي فراشه فقلت أي عم لو صليت بعدها ركعتين قال لو فعلت لأتممت الصلاة

مسلم 1594صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Travelers' prayer and its shortening
Chapter
Shortening prayer at Mina
Numbering
Darussalam 1594
Muslim 1594