مناسك حج - مكارم شيرازى، ناصر - الصفحة ٢١ - Conditions of Necessity of Hajj

Article ٤- Persons who have been employed for serving in the journey of Hajj as the religious leader or manager or deputy of caravan or member of the staff or physician and nurse or disciplinary agent or bank authority or any other occupation, and have been performed Hajj in this way, it is considered as their obligatory Hajj, on one condition that the costs of living of their families have been provided during the journey; but accepting such a this employment is not obligatory.

Article ٥- A person who can perform Hajj by borrowing money is not able to perform Hajj, even if he can pay later his whole debt at once or by installments, unless he has assets that can pay his debt from them easily.

Article ٦- It is not permitted to perform Hajj by Haraam( illegally made )money or the money that its Khums has not been paid and if the money for Ihram clothing and Tawaf and Say or payment for sacrifice or the cost of camp and floor covering that pilgrim stays on them in Arafat and Mena is Haraam, then his Hajj is invalidated as precaution.