Musnad Abu Ya'la al-Mawsili 111:80

Musa ibn Muhammad narrated to us, Yazid ibn Harun narrated to us, al-Hajjaj informed us, from Husayn ibn Abdullah ibn Ubaydullah ibn Abbas, from Ikrimah, from Ibn Abbas, from the Prophet (peace and blessings of Allah be upon him), who said: "There is no harm in a man entering into Ihram in a garment dyed with saffron that has been washed, such that it has no dust (residue) and no stain."