In the Name of Allah, The Most Gracious, Most Merciful
Dear noble brothers, fasting is one of the reasons behind answering man's Du'a,
because Du'a is mentioned in the Ayaat (verses) of Siyaam. Allah the Almighty says:
﴾ And when My slaves ask you (O Muhammad PBUH) concerning Me, then (answer them), I am indeed near (to them by My Knowledge). I respond to the invocations of the supplicant when he calls on Me (without any mediator or intercessor).﴿
Your Du'a during this month will be answered, and this is a great blessing, for you are the strongest due to your Du'a.
In fact, Du'a is an effective weapon in the hand of the believer.