Your intention in voluntary and mandatory pilgrimage to Mecca (as well as any act of worship) should be aimed to please God. If (for any reason) you fail to complete your pilgrimage, slaughter an animal as an offering to God. Do not cut your head or shave until the sacrifice is completed. If a pilgrim’s hair has to be shaved due to medical reason, he must either offer a sacrifice, fast or give to charity. Now if your problems are over (and you reach Mecca earlier), then perform (extra) voluntary rituals of the pilgrimage and offer a sacrifice. If (for some reason) you fail to sacrifice an animal, then fast three days during the pilgrimage and seven days after returning home. The above mentioned rules apply to those who live far from Mecca. Never fail to respect God (and His commandments); rest assured that the Lord is sever in punishment.