All five months of the Islami year is called Jamadi Ilawala. In these months while wearing clean clothes reciting the Quran slowly and with understanding brings about a lot of benefits. Also to pray lots of Nafl and other worshipping will also bring advantages.

First night:
Whoever, in this month, after praying the Maghrib Namaz prays four rakat as two rakat each in this way that after reciting surah Fatiha he recites surah Ikhlas 11 times then he will recive a huge amount of rewards and his sins will be forgiven. 

Two nafl: 
In these five months on the first night after praying the Isha Namaz two rakat should be prayed in such a way that after reciting surah Fatiha recite surah Juma but in the second rakat recite surah Muzammil after surah Fatiha. 

Four nowafl:
In these months on the first date after praying the Zuhr Namaz four rakat should be prayed in a way that after reciting surah Fatiha in each rakat recites surah Al-Nasr seven times. 

Third night:
In the month of Jamadi Ilawala, on the third night, after praying the Isha Namaz pray twenty nafl as two rakat each in such a way that after reciting surah Fatiha recite surah Kadr ten times. After completing all twenty nafl, with wadu, sit in the direction of the Kiblah and recite the following verses till Fajr azaan. InshAllah, Allah Almighty will grant you with lots of rewards. Also He will fulfill any wish you may have.  

Nafly Fasting:
The 13th, 14th and 15th of this month are considered excellent for keeping a fast. 

21st night:
On the 21st night of this month after praying the Isha Namaz pray six rakat nafl as two rakat each in such a way that after reciting surah Fatiha recite surah Ikhlas three times. After praying all the six nafl recite the durud-e-pak 100 times. 

27th night:
On this night after praying the Isha Namaz pray eight rakat nafl as two rakat each in this way that in each rakat after reciting surah Fatiha recite surah Duha once. After this recite the following vird   

قُدُّوْسٌand in the state of wadu fall asleep. Inshallah Allah Almighty will grant you with many of awards. 

A very effective prayer:
Ibn-e-Abbas (رضی اللہ عنہ) said that Hazrat Ibrahim met Hazrat Zul Qarnain and asked him how did you view the entire world and how did you become the master from the east to the west. He replied by reciting  قُلْ ہُوَ اللّٰہُ اَحَدٌ   a few verses and said that whoever recites these verses with receive 10 lakh awards, 10 lakh sins will be forgiven and 10 lakh times his status will increase. Hazrat Ibrahim asked for those verses and was told what they were.