The Book of Prayers (Kitab Al-Salat)
Muslim :: Book 4 : Hadith 1489
Ibn 'Umar reported that he summoned (people) to prayer at a place (known as) Dajnan, and the rest of the hadith is the same, and then said: Pray in your dwellings, but he did not repeat for the second time words of Ibn 'Umar (Pray in your dwellings).