(2) باب المواقيت
Al-Bukhari reported that it was Umar, who specified Dhat 'Irq as the miqat (of those coming from Iraq). (ID)
Reference (ID): Bulugh al-Maram 725 (ID)
In-book reference (ID): Book 6, Hadith 18 (ID)
English translation (ID): Book 6, Hadith 744 (ID)