Whenever Messenger of Allah ﷺ intended to lead a Ghazwa, he would use an equivocation from which one would understand that he was going to a different destination .
عَنْ رَسُولِ اللَّهِ ﷺ وَلَمْ يَكُنْ رَسُولُ اللَّهِ ﷺ يُرِيدُ غَزْوَةً إِلاَّ وَرَّى بِغَيْرِهَا