Imam Malik (may Allah have mercy on him) asked Abdullah bin Dinar (may Allah have mercy on him) what Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) used to do with the coverings of his sacrificial camels. He said that when the covering of the House of Allah was made, he would give them in charity.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 10186