There are 15 places wherein the opinion of Umar (Radhiallaahu Anhu) conformed to revelation.
There are nine instances in which verses were revealed exactly as Hadhrat Umar (Radhiallaahu Anhu) had suggested.
1. Maqaam Ibraahim: wherein Umar (Radhiallaahu Anhu) told Nabi (Sallallaahu Alayhi Wasallam), "Why donít you make the Maqaam Ibraahim (Alayhis salaam) a prayer place?" Allah revealed the Aayat, "And the Maqaam of Ibrahim (Alayhis salaam) a prayer place."