1 Corinthians 9:11

'If we have sowed to you spiritual things, is it a great matter if we shall reap your fleshly things?'

So the Scripture is here declaring that those who sow spiritual things should be able to reap from the 'fleshly' things that are possessed by those to whom they sow spiritual things, those who are blessed by the spiritual things. That should only be as expected.

Note the change to 'we'. This probably includes his fellow-workers who were with him in Corinth as 1 Corinthians 9:12 confirms.