It wasnarrated from 'Abdullah bin 'Umar that 'Umar bin Khattab saw asilken two piece suit (being offered for sale). He said:
"OMessengerof Allah, why don't you buy this two piece suit (to wearfor meeting)the delegations, and on Fridays?" The Messenger ofAllah (ﷺ) said:"This is only worn by one who has no share in theHereafter." (ID)
English reference (ID): Vol. 4, Book 32, Hadith 3591 (ID)
Arabic reference (ID): Book 32, Hadith 3722 (ID)