Isa, Allah's Spirit

S 4:171 People of the Book, do not exceed in your religion nor say about Allah but the truth. The Messiah Isa Son Of Maryam is only Allah’s messenger and his word which he threw to Maryam and spirit from him. So believe in Allah and his messengers and do not say Three. Cease; it is better for you. Allah is only one god. Praise be to him that he should have a child! His is what is in the skies and what is on the Earth. And Allah was sufficient as an agent.

S 19:17-19 And she took from them a screen. Then we sent to her our spirit and it assumed for her the likeness of a regular man. She said: I take refuge in Al-Rahman from you, if you are fearing. He said: I am only a messenger of your lord’s that I may give you a pure boy.

See: The Epistula Apostolorum: Epistle of the Apostles

In non-Quranic hadith we read: "They will then go to Musa (ﷺ) but he will say: `I am not the one to do that; go to `Isa (Jesus), Allah's Word and spirit.'" https://sunnah.com/riyadussalihin:201