Hajj is a kind of worship that has similar forms in all divine religions. It is one of the basic worships of Islam and is performed in the city of Mecca. According to the statement of the al-Qurʾān, the first prophet to call for pilgrimage was prophet Ibrāhīm. He determined the principles of pilgrimage for the first time and ensured that the Kaʿba was visited, and the prophets and their ummahs who came after him also visited the Kaʿba. There have been changes in the dimensions of tawḥīd, place, time and form over time in these principles that prophet Ibrāhīm set about pilgrimage. Possibly, due to its different dimensions, the most changed form of worship is the pilgrimage. It is possible to see these changes regarding the pilgrimage in the economic and class practices of the Meccans at the time of the advent of Islam. Due to the limitations of the article, all the changes made by the Meccans in the pilgrimage worship were not evaluated, and only the tawḥīd dimension of the subject was discussed in the study. Tawḥīd, on the other hand, is the most basic principle of all religions in general, and of Islam in particular. Because the purpose of sending all the prophets sent by Allah is to reorganize the consciousness of tawḥīd that has been falsified over time. It is possible to say that the first and most important deviation from Ibrāhīm’s principles regarding ḥajj is about tawḥīd. These changes,which were practised by the Meccans, were transformed into its original form in the light of ayath and the practises of the prophet. In this transformation, it is also possible to clearly see the stance that Islam has taken against the practices of previous religions, which is to continue some with the same, reject some and accept some by changing. Thus, the verse and with the practices of the Prophet, pilgrimage was purified from idolatry and polytheism, superstitious beliefs were erased and it was converted to its original form in the prophet Ibrāhīm period.