Stay in Mina
The twelfth obligation in Hajj is to spend the nights of the eve of the eleventh and twelfth in Mina. It is necessary to form the intention to do so in order to attain the nearness of Allah. If, on the day of Idd, the pilgrim departs to Makkah to perform the Tawaaf and Saee, it is obligatory on him to return to Mina to spend the night there. He who has not refrained from hunting in the state of ihram must also spend the night of the eve of the thirteenth in Mina. As a matter of caution, so must one who has not abstained from sexual intercourse in the state of ihram. Apart from these two categories, the remaining pilgrims can depart from Mina after Zuhr on the twelfth but if they delay their departure till night falls, they must spend the night of the eve of the thirteenth in Mina till dawn.