I saw a clip of Sheikh Fawzan saying that seeking blessings from righteous people is shirk.I also saw a clip from sheikh Salih As Suhaymi saying if the Prophet ﷺ was alive we’d seek blessings through his hair and body but since he died we have no proof we have persevered hair of his.Can you explain?

Ustadh AbdulAziz al-Haqqan
Nothing needs explanation only the prophet is the exception