The holy Prophet and Ali is of one light

Salman Farsi narrates that the Messenger of Allah (ص) said:

﴿ كُنْتُ أَنَا وَعَلِيٌّ نُوراً بَيْنَ يَدَيِ اللهِ عَزَّ وَجَلَّ مُعَلَّقاً، يُسَبِّحُ اللهَ ذلِكَ النُّورُ وَيُقَدِّسُهُ قَبْلَ أَنْ يَخْلُقَ اللهُ آدَمَ بِأَرْبَعَةَ (عَـشْـرَ) أَلْفِ عَامٍ، فَلَـمَّا خَلَقَ اللهُ عَزَّ وَجَلَّ آدَمَ رَكَّبَ ذَلِكَ النُّورَ فِي صُلْبِهِ، فَلَمْ نَزَلْ فِي شَيْءٍ وَاحِدٍ حَتَّی افْتَرَقْنَا فِي صُلْبِ عَبْدِ الـمُطَلِّبِ فَجُزْءٌ أَنَا وَجُزْءٌ عَلِيٌ ﴾

"I and Ali were in the form of a suspended light in the presence of the Almighty Allah. That light glorified and sanctified Allah, (1) four (ten) thousand years before He created Adam. When the Almighty and All-High Allah created Hazrat Adam, He placed that light in his loins, and we were constantly in one thing until we separated from each other at the rear of Abdul-Muttalib; one part of it became me and the other part became Ali. [I manifested in prophethood and Ali in the caliphate]” (2)