From Sahih Muslim (Hadith 771):
Jabir b. 'Abdullah reported:When the Ka'ba was constructed the Messenger of Allah (ﷺ) and Abbas went and lifted stones. Abbas said to the Messenger of Allah (ﷺ): Place your lower garment on your shoulder (so that you may protect yourself from the roughness and hardness of stones). He (the Holy Prophet) did this, but fell down upon the ground in a state of unconciousness and his eyes were turned towards the sky. He then stood up and said: My lower garment, my lower garment; and this wrapper was tied around him. In the hadith transmitted by Ibn Rafi', there is the word:" On his neck" and he did not say:" Upon his shoulder
Reference: Muslim 771