What is the advantage of our pray for Imam Mahdi’s health?

One should not say that if Allah decides to remain the Imam healthy, He can do it without our prayer since the answer is that, in this world, Allah has intended to do everything through a natural cause and effect procedure and our prayer is one of the causes that will have its own effect.

However, there are numerous benefits to obtain through praying for Imam Mahdi. Here we enumerate a few of them:

1. In fact, this is a path to remember our Imam and thus we can be spiritually connected to him. Actually, this connection serves for our spiritual perfection and its sublimity and excellence since certainly, if we pray for the Imam, he will remember us in his prayers, and his special kindness will be extended to us as well. For sure, his prayer will not be at all rejected by Allah.
2. To pray for the Imam means that we can take him into our consideration and we are going to give him precedence over a lot of beings in this world. Therefore, this issue causes that our affection towards Imam al-Mahdi’s increases in our heart since remembering someone who is beloved, causes the lover to love him more and more. 
3. This is a fact that praying for Imam al-Mahdi means to swear allegiance to him because one who wishes his health, he tries to avoid everything that bothers him. It also helps us not to be negligent about our Islamic duties and to always be cautious not to act irreligiously. 

Consequently, according to the Infallibles’ statements and narrations, praying for Imam al-Mahdi’s health is acceptable and also recommended because, praying is not only a sort of Allah’s worshiping, but also is influential in preventing difficulties and constraints imposed on our life too. On the other hand, praying for our Imam’s health has a great role in human’s spiritual purifications and it causes to love our Imam more. In other words, although Allah protects the twelfth Imam from serious diseases and problems throughout his life, we should pray for his health so that we could show our affection to him and by this way we can attract his kindness to ourselves.