IMPORTANCE OF HAJJ
Among all the acts of worship (furoo-e-deen), Hajj is the only worship, for which a complete surah (Surah Hajj) is revealed in the Holy Quran. Hajj is also mentioned in Surah Ale Imran and Surah Baqarah in Quran. Hajj is also the only worship, which, if started, must be completed and can not be left half-done, even if it is a Mustahab Hajj (unlike Mustahab Sawm, which can be broken anytime, if necessary, without any sin).
Quran: "And the Hajj is incumbent upon mankind for the sake of Allah, for those who canafford to undertake journey to it; and whoever denies, then surely Allah is Self-sufficient,independent of the worlds", Surah Ale Imran, (3:97).
Hadees 1: If a person, on whom Hajj has become wajib, does not perform Hajj and dies,he/she will die as a christian or a jew.
Hadees 2: If Hajj becomes wajib on a person and it is not performed, then he/she will be raised as a christian or jew on the day of judgement.
Hadees 3: When a person, on whom Hajj becomes wajib, completes the Hajj properly,his/her sins are forgiven such as if he/she is a newly born person.
Hadees 4: When a person completes a Hajj properly, his/her every dua is accepted for four months.
Hajj Amaal
1). Recite Surah hajj after every 2 days.

2). Recite Durood after every namaz
اللَّهُمَّ صَلِّ عَلَى مُحَمَّدٍ وَ آلِ مُحَمَّدٍ وَاقْضِ عَنِّي دَيْنَ الدُّنْيَا وَالْآخِرَةِ
اے اللہ محمد و آل محمد پر رحمت نازل فرما اور مجھ سے دنیا و آخرت کا قرض اتار دے۔

3). Recite 100 times daily
مَا شَاءَ ﷲ كَانَ
جو خدا چاہے وہی ہوتا ہے
لَا حَوْلَ وَلَا قُوَّۃَ اِلَّا بِاللّٰہِ العَلِیِّ العَظِیْمِ
نہیں کوئی طاقت و قوت مگر وہ خداے بلند و بزرگ سے ہے

4). Recite 1000 times daily
لَا حَوْلَ وَلَا قُوَّۃَ اِلَّا بِاللّٰہِ
نہیں کوئی طاقت و قوت مگر وہ خد