attribute. Thus, the Prophet صَلَّى الـلّٰـهُ عَلَيْهِ وَاٰلِهٖ وَسَلَّم being a ‘Mercy to the worlds' (رَحْمۃٌ لِّلْعَالَمِیْن) is the expression of Allah Almighty's attribute of Raḥmān.

Let me elaborate on this point: Allah Almighty is Raḥmān for humans, but how do we know this? We know it because He made His Beloved Prophet صَلَّى الـلّٰـهُ عَلَيْهِ وَاٰلِهٖ وَسَلَّم  a mercy for humans. Allah Almighty is Raḥmān for angels, but how was this manifested? By making His Beloved Prophet  صَلَّى الـلّٰـهُ عَلَيْهِ وَاٰلِهٖ وَسَلَّم  a mercy for angels. Allah Almighty is Raḥmān for the heavens and the earth- He manifested this by making His Beloved Prophet صَلَّى الـلّٰـهُ عَلَيْهِ وَاٰلِهٖ وَسَلَّم  a mercy for them. Allah Almighty is Merciful to all of creation- how do we know this? Because He made His Beloved Prophet صَلَّى الـلّٰـهُ عَلَيْهِ وَاٰلِهٖ وَسَلَّم  a mercy for all of creation. Allah Almighty is Raḥmān for this world, so He sent His Beloved Prophet صَلَّى الـلّٰـهُ عَلَيْهِ وَاٰلِهٖ وَسَلَّم  as a mercy to this world. The truth is that the ultimate manifestation of Allah Almighty's attribute of Raḥmān will be on the Day of Judgment, because as mentioned in the noble Hadith, only one of His mercies has been manifested in this world, while on the Day of Judgment, 100 mercies of Allah will be manifested. Therefore, the Day of Judgment will truly be the day of the manifestation of the attribute of Raḥmān. Allah Almighty has also made the Prophet صَلَّى الـلّٰـهُ عَلَيْهِ وَاٰلِهٖ وَسَلَّم  a mercy for that Day. The true manifestation of him being a ' Mercy to the worlds' will also be on the Day of Judgment. He will be granted 'Liwāʾ al-Ḥamd' (the banner of praise), elevated to Maqām Maḥmūd (the praised station), and granted the station of Grand Intercession. All people, near and far, past and present, will seek intercession from him. He صَلَّى الـلّٰـهُ عَلَيْهِ وَاٰلِهٖ وَسَلَّم  will say: أَنَا لَهَا  meaning I am the one for it (i.e., I have been made a mercy for all the worlds).

Dear Islamic brothers! Thus, it is clear that Raḥmān is Allah Almighty, and this name and attribute belongs to Him. No one besides Allah can be called Raḥmān. However, Allah Almighty made His Beloved Prophet صَلَّى الـلّٰـهُ عَلَيْهِ وَاٰلِهٖ وَسَلَّم the manifestation of this attribute.