مسند أحمد

It was narrated from Abu Moosa that he used to advise people to do Tamattu` (in Hajj). A man said to him: Do not rush in giving fatwas, for you do not know what Ameer al-Mu`mineen has decided with regard to Haji. When he met him later on, he asked him and ‘Umar said: I know that the Prophet (ﷺ) did it and his Companions did it, but I do not like [the people] to have intercourse with [their wives] beneath the arak trees and go out to Hajj with their heads dripping(from ghusl).