The ruling on one who increases his worship only in Ramadan

Question:
May Allah reward you, Honorable Shaykh. There are some people who increase their worship only in the month of Ramadan, and they say that what is between Ramadan and the next Ramadan is an expiation for what is in between. How do you view these people, and what do you advise them?

Answer:
As for the one who does not pray the obligatory prayers except in Ramadan, and abandons prayer in other months, he is a disbeliever, and Ramadan does not benefit him, nor does any deed benefit him until he repents to Allah the Exalted. As for the one who strives in Ramadan with voluntary acts, such as voluntary prayers, recitation of the Qur'an, remembrance of Allah the Exalted, and charity in Ramadan, his work is actually deficient. The Muslim worships Allah in Ramadan and in other months; he gives charity constantly according to his ability in Ramadan and at other times; he stands in prayer at night in Ramadan and in other months; he recites the Qur'an in Ramadan and in other months. The Muslim should not cut off his worship and make it specific to Ramadan. This is a great deficiency in his work. However, if he maintains the obligatory prayers and does not abandon any of them, he is a Muslim, but there is a deficiency in his state. What he should do is continue the acts of obedience and the acts of drawing near to Allah in Ramadan and in other months. Allah made the month of Ramadan an addition of good for the Muslim. Otherwise, the Muslim is required to do righteous deeds and persist in them. Allah the Exalted said: meaning that death comes to you, so Allah commanded His worship throughout life until a person meets death.