It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) said: "Silk clothing is worn by the one who has no share in the Hereafter."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 5364
Hadith Gradingحکم دارالسلام:إسناده من جهة بكر بن عبدالله المزني صحيح ، وسلف الكلام بشر بن عائذ برقم : 5125 .