What is the answered prayer from God for achieving a certain purpose?

Among the reasons for the acceptance of supplications are: a Muslim's supplication for his brother in his absence, and supplication at specific times such as Laylat al-Qadr (the Night of Power), the last part of the night, Friday, between the Adhan and Iqamah, when rain falls, when armies meet, and while traveling. Also, the supplication of the fasting person and the oppressed. Furthermore, there are individuals whom Allah has blessed with the gift of answered prayers. And whoever wishes for Allah to answer his supplication should ensure his food is good (halal and earned lawfully).