So he revealed to His servant whatever He revealed.
means, Jibril conveyed to Allah's servant Muhammad whatever he conveyed. Or,
the meaning here could be;Allah revealed to His servant Muhammad whatever He revealed through Jibril.
Both meanings are correct.
Sa`id bin Jubayr said about Allah's statement,
فَأَوْحَى إِلَى عَبْدِهِ مَا أَوْحَى
(So He revealed to His servant whatever He revealed.
"Allah revealed to him,
أَلَمْ يَجِدْكَ يَتِيماً
Did He not find you an orphan. (93;6), and,
وَرَفَعْنَا لَكَ ذِكْرَكَ
And have We not raised high your fame, (94;4)"
Someone else said,
"Allah revealed to the Prophet that the Prophets will not enter Paradise until he enters it first, and the nations will not enter it until his Ummah enters it first."
Did the Prophet see His Lord during the Night of Isra
Allah said next,
مَا كَذَبَ الْفُوَادُ مَا رَأَى