All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
We advise the questioning sister to refuse marriage to anyone who does not perform the prayer. There is no good in such a person and one cannot have confidence in him in any matter.
Obviously the one who neglects the prayer is also more likely to neglect other Islamic obligations.
Know that many scholars consider the person who abandons the prayer due to laziness a Kaafir (non-Muslim) based on the Hadeeth in which the Prophet said: “Between a person and disbelief is abandoning the prayer.” [Muslim]
‘Umar said: “The person who abandons the prayer does not have any share in Islam.”
Allah knows best.