The Prophets intercession
The Messenger of Allah (sal Allahu alaihi wa sallam) said, “Every Prophet has one supplication that is granted to him, and every Prophet hastened to make that supplication (in this world). But I have postponed my supplication in order to intercede for my nation on the Day of Resurrection, and if Allah wills, it will include everyone of my nation who dies and does not associate anything with Allah.”
No one will be able to make Ash-Shafaa’ah (intercession) on the Day of Judgment except with the permission of Allah, and none will intercede unless Allah is pleased with both the intercessor and the one for whom intercession is made.
Allah says (interpretation of the meaning): …Who is he that can intercede with Him except with His Permission?… [Al-Baqarah 2: 255]
…And they cannot intercede except for him with whom He is pleased… [Al-Anbiya 21: 28]
From the ones who Allah will allow to intercede on the Day of Judgement is Our Prophet Muhammad (sal Allahu alaihi wa sallam) the greatest human being sent forth to mankind. This shows the virtues and status that he (sal Allahu alaihi wa sallam) possesses.
The above Hadith shows us the dangers of Shirk which is the crime of assocating partners with Allah.
We also derive from this Hadith the importance of Tawheed which is to single out Allah alone in His right to be worshipped.
And Allah knows best!