Hajj refers to a list of prescribed actions you will need to accomplish on the holy land of Mecca. The Hajj pilgrimage is held during the month of Zulhijjah on a yearly basis. That is also regarded as an yearly gathering of world Muslims. هُوَ ٱلَّذِى بَعَثَ فِى ٱلْأُمِّيِّـۧنَ رَسُولًا https://islamarticle.com/blogs/hadith-on-charity/