What are the obligatory Hajj?

Pilgrimage is one of the five pillars of Islam, imposing an eye on who can do both physically and materially once in life. And the evidence of his legitimacy, saying: "And God is on the people Hajj the House of the able to the path and the disbeliever, God is rich from the worlds" Surat Al-Imran Aya 97. Pilgrimage means the pillars of which the Hajj is valid only by five pillars: Ihram for Hajj with intention in the heart, and stand by Arafah, and Tawaf, and the pursuit between Safa and Marwa, throat or default. The first pillar is ihraam, which is meant to enter the Hajj (ie, the intention), in which the pilgrim enters in specific sanctuaries called the sanctities of the initiation of Hajj. The intention is the heart, but it is desirable to speak the intention by saying: "The intention of the Hajj and forbidden to God Almighty," and if he performs Hajj on behalf of the non-saying: "I intended the pilgrimage for so and I gave him to God Almighty." The act is not permissible before the intention; that is, if he performed the elements and duties of Hajj before the intention was made, his argument was not valid. The evidence of his legitimacy is that of the Messenger of Allaah (peace and blessings of Allaah be upon him): "But deeds are by intentions, but every man has what he intended." Narrated by al-Bukhaari and Muslim in their Saheeh. The second pillar is to stand at Arafah: that the pilgrim should stand in any place in the region of Arafa on the ninth day of Dhu'l-Hijjah, and the time for standing from the sunset of the ninth day (ie from noon) to the dawn of the tenth day of Dhu'l-Hijjah begins. The imposition of the Hajj is valid for a moment in the land of Arafa during the mentioned time, but from the year to spend Hajj in Arafa from noon to Morocco on the ninth day of Dhu al-Hijjah. And the evidence of the legitimacy of the words of God: "If you come from Arafat, remember God at the sacred hair" Surat Baqarah verse 198. The third pillar is tawaaf, which is tawaaf al-ifaadah, ie, the hadeeth of Hajj from Mina to Makkah (also called the tawaaf of the visit, because he visits the sanctuary without having to stay there), and this is after throwing, slaughtering and shaving. It is preferable to do tawaaf on the tenth day (the day of slaughter), and it is haraam to delay the tawaaf for this time, and to delay it on the days of al-Tashreeq is more haraam. The meaning of the verse is that the pilgrim should perform the tawaaf after the throat, and after the slaughter (and to fulfill their vows). The fourth pillar, Omar bin Safa and Marwa: It is a quick walk between the rocks Safa and Marwa (distance between them 420 meters), which are close to the Kaaba. And the pursuit between them on seven runs, each time he cuts the distance (420 meters) back or forth it is considered a way, and requires the start rock Safa. This ritual was taken from the Hajj rituals of our mother, Hajar, the wife of our Prophet Ibrahim, peace be upon him, and the mother of our master Ismael, peace be upon him, as she sought between the rocks back and forth in search of water until the Zamzam spring burst. And the evidence of the legitimacy of this pillar says: "Safa and Marwa of the poets of God, the pilgrimage of the house or Umrah does not wing to roam them and volunteered good, God is thankful to know" Surah Baqarah verse 158. The fifth pillar, throat or shortening : is to shave the hair of the head of the whole head of Moses, or to shorten the length of his hair, and prefer to the male throat, while the need of the female need only to default. And it is after throwing the Jamara Aqaba or after tawaaf al-ifaadah. And the evidence of his legitimacy, saying: "To enter the Sacred Mosque, God willing, are safe, lifting your heads and those who do not fear." Al-Fath verse 27.