18 ذی الحج یوم شہادت داماد رسول ، کاتب وحی ، امام مظلوم
سیدنا عثمان ذوالنورین رضی اللہ عنہ

Ameerul Momineen Hazrat Syedna Usman Bin Affan, Al-Ghani, Dur Noraine(r.a) was the only companion who was cause of glad tidding of Jannah for 1,400 companions(r.a) people who took pledge under the tree[baite-e-Ridwan]..

"Indeed, Allah s.w.t was pleased with the believers when they gave their pledge(baite) to you (O Muhammad ) under the tree." [48:18]

On 5th Hijri, he was set to detention by the Kuffars in Makkah on sending him for the prior information for reciting Hajj by Prophet Muhammad (s.a.w.) The Kuffars set out the rumor that they had killed Hazrat Usman (r.a) upon which Prophet Muhammad (s.a.w.) took an Oath by his 1,400 Companions (r.a) under the tree of Babool.
Prophet Muhammad (s.a.w.w) made his left hand to the Oath as the hand of Hazrat Usman (r.a). This incident is the most popular in the history of Islam and is termed as "Oath of Rizwan (Bait-e-Rizwan).

MANY MANY BLESSINGS OF ALLAH S.W.T BE UPON HIM ....