It is narrated from Nafi‘ that Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) said: Whoever makes a vow for a badnah (badnah refers to a camel, cow, or ox that is sent to Makkah for sacrifice), he should hang two sandals around its neck, perform ish‘ar (marking), and then slaughter it near the House of Allah or at Mina on the tenth of Dhul-Hijjah; there is no other place for this. And whoever makes a vow for sacrifice of a camel or cow, he has the choice to slaughter it wherever he wishes.