What is the reason behind the Iranian authorities' promotion of larger families?

Iranian leaders may believe that having a larger population is beneficial for the country's economic and military strength, as well as for maintaining cultural and religious traditions. Additionally, a larger population could potentially increase the country's workforce and tax base, which could help to support social welfare programs and infrastructure development. Furthermore, in some cases, there may be a desire to counteract declining birth rates and ensure that the population remains stable or grows.