مناسك حج - مكارم شيرازى، ناصر - الصفحة ١٨٩ - Rulings of Wuquf in Arafat and Mash'ar
Article ٣٠٤- If a pilgrim does not find an animal of sacrifice until the time of return, but has the money of sacrifice, he/ she can give the money to a reliable person in order to buy a sheep until the end of Dhul- Hijjah and sacrifice that in behalf of him/ her in Mena and if it is not possible perform it in Mecca, and if it is not possible perform it in the month of Dhul- Hijjah of the nest year; if the pilgrim cannot find a reliable person in there he/ she can ask some of Hajjis to buy and sacrifice in behalf of him/ her in the nest year.
Article ٣٠٥- It is precaution not to sell the skin of the sacrificed animal and if he/ she want to keep it for himself/ herself give an equal amount of money to a poor person.
Article ٣٠٦- Sacrificing in the places for sacrifice in enough, although today it is common that all of them are out of the Mena region and it is not necessary to sacrifice in a corner of Mena hiddenly or leave it for the next days.