Is it permissible to remind someone who enters my farm by saying, "Masha'Allah, Tabarak Allah," out of fear of their envy?

A Muslim should not be overcome by fear of envy. Rather, he should put his trust in Allah and take the legitimate precautions, such as the morning and evening remembrances (adhkar) and supplication (du'a). If he fears that a person might envy him, there is no harm in gently reminding that person to say "Tabarak Allah (May Allah bless)." The Prophet, peace and blessings be upon him, commanded the envier to perform ghusl (ritual bath) if asked to do so. And asking for blessings is easier than asking for the leftover water from ablution (wudu).