Permissibility of using "علیہ السلام" with the names of the Household of the Prophetﷺ

Dr Muhammad Tahir-ul-Qadri receives no royalties from his publications which include his numerous books, DVDs and public speeches. He has dedicated all of his past, present and future royalties to Minhaj-ul-Quran International. All his lifetime scholarly works are exclusively for the service of humanity.