Performing Hajj with Retirement Benefits Received by a Bank Employee

What do the respected scholars and honorable Muftis say regarding this matter: My father was employed in a bank. After his retirement, he received some money. What is the ruling on performing Hajj with that money (for both my father and my mother)?
(2) What would be the ruling on my own Hajj from this wealth, considering that I am also employed? Kindly clarify this matter.
Clarification Required:
What type of job did the father of the questioner have in the bank, and what work does the questioner himself do? Please provide answers to these clarifications and resend the question to Darul Ifta. InshaAllah, the Shariah ruling will also be provided. Darul Ifta, Jamia Binoria, Site Karachi
Answer to Clarification:
It should be noted that the questioner’s father was an officer in grade 3 at the bank, and his work was related to interest-based dealings. As for the questioner himself, he is employed in a garment company.

الجوابُ حامِدا ًو مُصلیِّا ً

Employment in a bank of such nature, and the income earned from it, is not permissible in Shariah. Therefore, if the father of the questioner possesses only income from the bank and nothing else, then in such a case, the obligation of Hajj cannot be established through unlawful earnings, nor can anyone else perform Hajj using that money. Rather, the entire amount must be given away in charity. However, if the questioner himself has some lawful earnings or another permissible source of livelihood that suffices to cover the necessary expenses of travel to and from Hajj, then in that case Hajj becomes obligatory upon him; otherwise, it does not. Nonetheless, if he has already performed the obligatory Hajj with such money, the obligation of Hajj will be considered fulfilled and discharged.

مأخَذُ الفَتوی

کمافی الشامیۃ: ويجتهد في تحصيل نفقة حلال،فإنه لا يقبل بالنفقة الحرام كما ورد في الحديث، مع أنه يسقط الفرض عنه معها ولا تنافي بين سقوطه، وعدم قبوله فلا يثاب لعدم القبول، ولا يعاقب عقاب تارك الحج. اهـ(2/456)۔