又貸ししない条件でこのＣＤを貸してあげよう。

tbd

I will lend you this CD on condition that you don't lend it to anyone else.

I'll lend you this CD on condition that you don't lend it to anyone else.

本を又貸ししてはいけない。

tbd

Don't lend a borrowed book to another.