Hadith.3096 - Ali ibn al-Nu'man narrated from Sa'id al-A'raj, from Abu Abdullah (as), who said
I asked him about a man who has stoned the pillars, slaughtered his sacrifice, and shaved his head—can he wear a shirt and a cap before visiting the House?
Imam (as) replied: "If he is performing Tamattu' (Hajj combined with Umrah), then no. But if he is performing Ifrad (Hajj alone), then yes."