´It was narrated that Abu Musa said that:` he used to issue Fatwas concerning Tamattu' Then a man said to him: "Withhold some of your Fatwas ,for you do not know what the commander of the Believers introduced into the rites subsequently." Then when I met him, I asked him. 'Umar said: "I know that the Messenger of Allah and his companions did it, but I did not like that people should lay with their wives in the shade of the Arak trees, and then go out for Hajj with their heads dripping."
Hadith Referenceسنن نسائي / كتاب مناسك الحج / 2736
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم
1؎: Because it is possible that your legal verdict (fatwa) may be contrary to the order issued by the Amir al-Mu’minin, and he may become displeased with you.
Explanation & Benefits
Hafiz Muhammad Ameen
(1) From this narration, the reality of the matter becomes clear that Umar radi Allahu anhu considered it legally permissible, but due to the aforementioned reason, he did not regard Hajj Tamattu' as preferable. This was an ijtihadi (independent juristic) error on his part; however, the correct view is that Hajj Tamattu' is superior. And Allah knows best.
(2) "The Prophet sallallahu alayhi wa sallam did this." That is, he gave this command; otherwise, he himself did not become halal (exit the state of ihram). Or, in the literal sense, he performed tamattu'. And in this sense, Umar radi Allahu anhu also did not dislike tamattu' (qiran).
(3) "Under the trees of the pilu (Salvadora)..." In those days, these trees must have been common there, hence they were mentioned incidentally.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 2736
´It was narrated from Ibrahim bin Abu Musa:` “Abu Musa Al-Ash’ari used to issue rulings concerning Tamattu’. Then a man said to him: ‘Withhold some of your rulings, for you do not know what the Commander of the Believers has introduced into the rites after you.’ (Abu Musa said:) ‘Then when I met him later on, I asked him.’ ‘Umar said: ‘I know that the Messenger of Allah (ﷺ) and his Companions did it, but I did not like that people should lie with their wives in the shade of the Arak trees and then go out for Hajj with their heads dripping,’ (i.e. due to the bath after sexual relations).”
Maulana Ataullah Sajid
Benefits and Issues: ➊ This narration also establishes that Umar (radi Allahu anhu) did not consider Hajj al-Tamattu‘ to be legally prohibited.
➋ The Messenger of Allah (sallallahu alayhi wa sallam) performed Hajj al-Qiran. When Umar (radi Allahu anhu) said that the Messenger of Allah (sallallahu alayhi wa sallam) performed Tamattu‘, by this he intended the literal meaning of Tamattu‘—that is, obtaining the benefit of both Hajj and ‘Umrah in a single journey. Or, it means that the noble Companions (radi Allahu anhum) performed Tamattu‘ by the command of the Messenger of Allah (sallallahu alayhi wa sallam), and considering his command to be equivalent to action, this statement was made.
Source: Commentary on Sunan Ibn Mājah by Mawlānā ‘Atā’ullāh Sājid, Page: 2979