﴿ أَنِ ٱغْدُوا۟ عَلَىٰ حَرْثِكُمْ إِن كُنتُمْ صَٰرِمِينَ ﴾

“"Go early to your tilth if you want to harvest the fruit!"”

saying ‘Go forth early to your tillage your produce ani’ghdū ‘alā harthikum constitutes an explication of the import of tanādaw ‘they called out to one another’; otherwise an relates to the verbal action to be understood as being bi-an if you are going to pluck’ if your intention is to pick the fruits the response to the conditional is indicated by what preceded it.