Question:If a person is active in fasting and praying only during Ramadhan, but he leaves off the prayer as Ramadhan ends, does he have a fast?
The prayer is a pillar from the pillars of Islam, and it is the most emphasized pillar after the two Testimonies of Faith. It is from the mandatory duties upon the individuals, and whoever abandons it while rejecting its obligation or due to laxity or laziness, then he has disbelieved.
In reference to those who fast Ramadhan and they only pray during Ramadhan, then this is an attempt to deceive Allah. What wicked people these are who do not know Allah except during Ramadhan.
Thus, their fast is not acceptable while they are abandoning the prayer outside of Ramadhan.
Permanent Committee for Research and VerdictsFatawa Islamiyah Page no, 247 Vol: 2
Source: Fatwa Islaam