May Allah be good to you. Is it permissible to lie for the benefit of the dawah (calling) to Allah?
No, the calling to Allah is based upon truthfulness (so in this case) there is no good in lying. (However), when there is rectification between the people, (and bringing) rectification between the people, then (in this case) it is okay to lie in order to bring rectification because the benefit (here) is greater. Likewise, it is okay between the spouses. A spouse may lie to other spouse for the benefit of rectifying things between them. There is no harm in this.