Mukhtasar Muslim

Narrated from Sayyiduna Uqbah bin Amir (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) went out one day and offered the funeral prayer for the martyrs of Uhud, then came towards the pulpit and said: I will be your predecessor and a witness over you, and by Allah, I am seeing the Hawd (Pond) of Kawthar at this moment. And I have been given the keys of the treasures of the earth, or the keys of the earth. And by Allah, I do not fear that you will become polytheists after me, but I fear that you will compete with one another for the world and become jealous of one another.