The last sermon of Umar (may Allah be pleased with him) during Hajj

It is narrated from Sa'id bin al-Musayyab (may Allah have mercy on him) that when Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) returned from Mina on the occasion of his last Hajj, he made his camel kneel at al-Batha', then made a heap of pebbles, spread one end of his cloak over it and reclined, then he raised his hands towards the sky and supplicated: 'Allahumma kabirat sinni, wa da'ufat quwwati, wa intasharat ra'iyyati, fa-qbidni ilayka ghayra mudayyi'in wa la mufarrit' (O Allah, my age has advanced, my strength has weakened and (the responsibilities of) my subjects have spread wide; so take me to Yourself in a state in which I am neither one who has neglected (rights) nor one who has fallen short). Then he came to Madinah in the month of Dhu al-Hijjah and addressed the people in a sermon, saying: "O people, the Sunnahs have been made clear for you, the obligations have been laid down for you, and I have left you upon a bright highway." And striking one of his hands on the other (for emphasis), he said: "Beware! Do not let yourselves lead the people off to the right and the left." The month of Dhu al-Hijjah had not yet ended when Sayyiduna Umar (may Allah be pleased with him) was martyred.

It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that Sayyiduna Umar (may Allah be pleased with him) remained alive for three days after being wounded; then he passed away, and he was given the ritual bath (ghusl) and shrouded.