The ruling on praying behind one who prays some of the prayers and abandons others

Question:
The Shaykh said: A man is known to be one who prays some of the prayers and abandons others, and he leads some of the prayers. He led a group of people in prayer, and when he established his prayer, a man was…

Answer:
Allah knows best. If the one who leads the prayer is not continuously abandoning some of the prayers, then the prayer behind him is valid. However, if he is continuously in the state of praying at times and abandoning at other times, then it is not permissible to pray behind him. If he is continuously in this state—praying at times and abandoning at others—he should not be followed in prayer, because the one who abandons some of the prayers is like the one who abandons all of the prayers.