Shaykh Ibn Baaz (may Allaah have mercy on him) said:
With regard to what some people do, doing a lot of âUmrahs after Hajj from al-Tanâeem of from al-Jiâraanah etc., we have stated above that there is no evidence that it is prescribed to do âUmrah after Hajj, rather the evidence indicates that it is better not to do that, because the Prophet (peace and blessings of Allaah be upon him) and his companions did not do âUmrah after they had finished Hajj. Rather the âUmrah that âAaâishah did from al-Tanâeem was because she had not done âUmrah with the people when they entered Makkah because she was menstruating. So she asked the Prophet (peace and blessings of Allaah be upon him) to let her do âUmrah to replace the âUmrah for which she had entered ihraam from the meeqaat, and the Prophet (peace and blessings of Allaah be upon him) let her do that, so she did two âUmrahs, the âUmrah that went along with Hajj, and this âUmrah done on its own. Whoever is in a similar situation to âAaâishahâs, there is nothing wrong with him or her doing âUmrah after completing Hajj, following all the evidence and to make things easier for the Muslims.
Undoubtedly if all the pilgrims were to do another âUmrah after completing Hajj, apart from the âUmrah they did when they entered Makkah, this would be too difficult for them all, because there would be too much overcrowding and too many accidents, as well as the fact that it goes against the teachings and Sunnah of the Prophet (peace and blessings of Allaah be upon him).
Majmooâ Fataawa Ibn Baaz, 16/46