Hajj refers to some set of prescribed actions you'll have to complete with the holy land of Mecca. The Hajj pilgrimage is held while in the month of Zulhijjah annually. This is often also considered as an annual accumulating of earth Muslims. هُوَ ٱلَّذِى بَعَثَ فِى ٱلْأُمِّيِّـۧنَ رَسُولًا مِّنْهُمْ يَتْلُوا۟ https://islamarticle.com/blogs/benefits-of-sixth-kalima/