Visitor visa query

[Youngk]

Hello all
Good afternoon

My husband want to invite our family friend to UK for visit for 2 weeks. He will be going back after 2 weeks. Now this family friend is not getting regular salary . So we will be sponsoring his trip.
My Husband intend to send him the copy of the following documents to support his application:

Payslips
letter of invitation
Our mortgage document (in our Joint name)
His British passport

My question
1) can I also support his application by providing the copy of my payslips and bank statements although my husband is the one inviting him

2) Do we need to transfer money to his account (His ticket money and money for his expenses) so that HO will be sure that we are sponsoring him.
Thank you your response will be highly appreciated