What is the ruling on one who abandons prayer, and is he considered a disbeliever? And does a woman's guardianship in matters of marriage transfer if her father is not Muslim?

The ruling on a Muslim who abandons prayer varies among scholars. Some consider it major disbelief (kufr akbar), others consider it a sin (fisq), and some differentiate between complete and partial abandonment. Our adopted fatwa (definition) is that one who abandons prayer out of laziness is not a disbeliever, and the father retains guardianship even if he abandons prayer out of laziness. The questioner should strive to invite those who abandon prayer with wisdom, reminding them of the seriousness of abandoning it.