Quranic verse on Hajj : Help you one another in Al-Birr and At-Taqwa (virtue, righteousness and piety); but do not help one another in sin and transgression

O you who believe! Violate not the sanctity of the Symbols of Allah, nor of the Sacred Month, nor of the animals brought for sacrifice, nor the garlanded people or animals , and others nor the people coming to the Sacred House (Makkah), seeking the bounty and good pleasure of their Lord. But when you finish the Ihram (of Hajj or 'Umrah ), you may hunt, and let not the hatred of some people in (once) stopping you from Al-Masjid-Al-Haram (at Makkah) lead you to transgression (and hostility on your part). Help you one another in Al-Birr and At-Taqwa (virtue, righteousness and piety); but do not help one another in sin and transgression. And fear Allah. Verily, Allah is Severe in punishment.
(سورة المائدة , Al-Maeda, Chapter #5, Verse #2)

Quranic verse on Hajj : whoever disbelieves [i.e. denies Hajj (pilgrimage to Makkah), then he is a disbeliever of Allah]

In it are manifest signs (for example), the Maqam (place) of Ibrahim (Abraham); whosoever enters it, he attains security. And Hajj (pilgrimage to Makkah) to the House (Ka'bah ) is a duty that mankind owes to Allah, those who can afford the expenses (for one's conveyance, provision and residence); and whoever disbelieves [i.e. denies Hajj (pilgrimage to Makkah), then he is a disbeliever of Allah], then Allah stands not in need of any of the 'Alamin (mankind, jinn and all that exists) .
(سورة آل عمران , Aal-e-Imran, Chapter #3, Verse #97)

Quranic verse on Hajj: the best provision is At-Taqwa (piety, righteousness)

The Hajj (pilgrimage) is (in) the well-known (lunar year) months (i.e. the 10th month, the 11th month and the first ten days of the 12th month of the Islamic calendar, i.e. two months and ten days). So whosoever intends to perform Hajj therein (by assuming Ihram), then he should not have sexual relations (with his wife), nor commit sin, nor dispute unjustly during the Hajj. And whatever good you do, (be sure) Allah knows it. And take a provision (with you) for the journey, but the best provision is At-Taqwa (piety, righteousness). So fear Me, O men of understanding!
(سورة البقرة , Al-Baqara, Chapter #2, Verse #197)

Quranic verse on Hajj : accept our repentance...

Our Lord! And make us submissive unto You and of our offspring a nation submissive unto You, and show us our Manasik (all the ceremonies of pilgrimage - Hajj and 'Umrah), and accept our repentance. Truly, You are the One Who accepts repentance, the Most Merciful.
(سورة البقرة , Al-Baqara, Chapter #2, Verse #128)

Female Professor of Neuroscience from USA converts to Islam

This Professor at the University of Texas became a Muslim and made the trip to Mecca to visit the ultimate house of God. She followed the true way of life even though it displeased her family and friends.