Musnad Ahmad 27:1125

Muhammad ibn Ja'far narrated to us, Shu'bah narrated to us, from Musa ibn 'Uqbah, from Salim ibn 'Abdullah, who said: 'Abdullah ibn 'Umar would almost curse the Bayda', and he would say: "The Messenger of Allah (peace and blessings of Allah be upon him) entered into Ihram from the mosque."