Calderdale CID is appealing for witnesses to an attack on Friday evening in Mixenden.
A man was walking on Long House Road, Mixenden, between 9.30pm and 10pm when he was attacked by two males with a weapon.
He was left with injuries to his arm and leg and is currently under sedation in Calderdale Royal Infirmary where he is receiving treatment.
Calderdale CID inspectors are appealing for anyone in the area at that time to come forward with information.
You can call 101 and ask for Calderdale CID or call Crimestoppers anonymously on 0800 555 111