I came to the Messenger of Allah ﷺ when he was at Mina, or at Arafat. He was surrounded by the people. When the bedouins came and saw his face, they would say: This is a blessed face. He said: He (the Prophet) appointed Dhat Irq as the place of putting on ihram for the people of Iraq.
قَالَ أَتَيْتُ رَسُولَ اللَّهِ ﷺ وَهُوَ بِمِنًى أَوْ بِعَرَفَاتٍ وَقَدْ أَطَافَ بِهِ النَّاسُ قَالَ فَتَجِيءُ الأَعْرَابُ فَإِذَا رَأَوْا وَجْهَهُ قَالُوا هَذَا وَجْهٌ مُبَارَكٌ قَالَ وَوَقَّتَ ذَاتَ عِرْقٍ لأَهْلِ الْعِرَاقِ