Bismillah Ir Rahman Ir Raheem
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. (Aal-e-Imran, Chapter #3, Verse # 97)
وَأَتِمُّوا الْحَجَّ وَالْعُمْرَةَ لِلَّهِ
And complete the Hajj or Umrah in the service of Allah
(Al-Baqara, Chapter #2, Verse # 196)
Hadith # 01: Once became obligatory, whoever dies without having performed Hajj dies a Jew or a Christian.
Hadith # 02: If Hajj becomes obligatory on a person and it is not performed, then he/she will be raised as a Christian or Jew on the Day of Judgment.
Hadith # 03: When a person, on whom Hajj becomes obligatory, completes the Hajj properly, his/her sins are forgiven such as if he/she is a newly born child.
Hadith # 04: When a person completes a Hajj properly, his/her every prayer is accepted for four months.