Abdullah bin Umar reported,

When these two garrison cities were conquered, the people came to Umar and said, "Commander of the Believers, the Messenger of Allah ﷺ designated Qarn as the miqat for the people of Najd, but it lies off our route, and going to Qarn would be difficult for us."He said, "Look for a point parallel to it on your own route."So he designated Dhat Irq as their miqat.

Azami 4786

Sahih

عن ابن عمر قال

لما فتح هذان المصران أتوا عمر فقالوا: يا أمير المؤمنين، إن رسول الله ﷺ حد لأهل نجد قرنا وهو جور عن طريقنا وإنا إن أردنا قرنا شق علينا؟ قال: فانظروا حذوها من طريقكم، فحد لهم ذات عرق.

الأعظمي 4786صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Hajj
Chapter
Times of prayer
Section
Amir al-Muminin Umar bin Khattab designating Dhat Irq as the miqat for the people of Iraq
Numbering
Jami al-Kamil 4786 (2nd edition)
Azami 4786