Hajj Badal is defined as when an individual gets an obligatory Hajj pilgrimage on his or her behalf by another person.  

Hajj Badal is permissible to be performed for another person, in circumstances that the person has been diagnosed with an ongoing terminal illness for which there is no recovery, or due to inability to perform Hajj because of old age or the person has already passed away.

Quran on Hajj:

وَلِلَّهِ عَلَى النَّاسِ حِجُّ الْبَيْتِ مَنِ اسْتَطَاعَ إِلَيْهِ سَبِيلًاوَمَن كَفَرَ فَإِنَّ اللَّهَ غَنِيٌّ عَنِ الْعَالَمِين َ

And Pilgrimage to the House is incumbent upon men for the sake of Allah, (upon) every one who is able to undertake the journey to it; and whoever disbelieves, then surely Allah is Self-sufficient, above any need of the worlds. 
(Al-Imran, Verse – 97)

Hadiths related to Hajj Badal:

It was reported from Ibn ‘Abbas (may Allah be pleased with them both) that a woman from Juhaynah came to the Prophet (peace and blessings of Allah be upon him and his family) and said: “My mother vowed to go for Hajj, but she did not go for Hajj before she died. Should I do Hajj on her behalf?” He (peace and blessings of Allah be upon him and his family) said, “Yes, do Hajj on her behalf. Do you not think that if your mother was in debt you would pay it off for her? Pay off the debt that is owed to Allah, for Allah is more deserving that what is owed to Him should be paid off.”
(Narrated by al-Bukhari, 1754)

It was narrated from Ibn ‘Abbas that the Messenger of Allah (peace and blessings of Allah be upon him and his family) heard a man saying “Labbayka ‘an Shubrumah (At your service, O Allaah, on behalf of Shubrumah).” The Messenger of Allah (peace and blessings of Allah be upon him and his family) said, “Who is Shubrumah?” He said, “A relative of mine.” The Messenger of Allah (peace and blessings of Allah be upon him and his family) said, “Have you ever done Hajj before?” He said, “No.” he said, “Do this Hajj for yourself, then do Hajj on behalf of Shubrumah.”
(Narrated by Abu Dawood, 1811; Ibn Majah, 2903 – this version was narrated by him)

Hajj Badal is a Hajj performed on behalf of someone who Hajj was obligatory but they are unable to perform Hajj because:

1) Physically incapable. ie, paralysed or elderly.
2) A sick person from an illness with no hope of recovery. This does not include temporary illness, where there is hope of recovery; one who is insane, because there is hope he will return to his senses; or one who is imprisoned, because there is hope he will be released.
3) One who has passed away. If a muslim dies without having performed the obligatory Hajj, and he or she met all the conditions of it being obligatory, then it is obligatory to perform Hajj on his/her behalf from the wealth he/she left behind, whether he/she left instructions to that effect or not.

1) Hajj Badal cannot be made on behalf of someone who is poor or financially incapable of going on hajj. (Hajj is not obligatory on him)
2) Hajj badal cannot be performed on behalf of someone who cannot perform Hajj because of a political or security circumstance.
3) It is not permissible to perform Hajj on two or more people in one Hajj.
4) It is not permissible for anyone to have the aim of earning money by performing Hajj on behalf of another. Any payment taken is used to perform the Hajj with the intention of doing an act of kindness for his/her brother or sister in Islam.

1) Once payment and registration is secured, an individual is allocated on behalf of the person.
2) The allocated individual is muslim, mentally and physically fit and well acquainted with the rulings and requirements of Hajj.
3) The Niy’yah ( intention for Hajj) on behalf of the person whom Hajj is being performed is made by the individual whilst in a state of ihram.
4) Once all the rights of Hajj are fulfilled, we will be informed of completion and duly inform you.