مناسك حج - مكارم شيرازى، ناصر - الصفحة ١٩٤ - Rulings of Wuquf in Arafat and Mash'ar
Article ٣١٥- Cutting the nail is good with cutting the hair of the head for men and women; but it is obligatory precaution not to suffice to cutting the nail solely.
Article ٣١٦- It is obligatory to perform the triple acts of Mena in sequence; it means that first: Ramy al- Jamarah al- Aqaba, second: sacrifice and third: shaving the head or cutting a part of its hair of the head and nail, and whenever a pilgrim performs these acts without observing the sequence because of ignorance or forgetfulness then his acts are correct, even if he/ she do not observe that deliberately, he/ she has performed a sin but there is nothing on him, and delaying shaving the head or cutting the hair of the head or the nail has no problem until the twelfth day, but it is precaution not to perform these acts in the night.