Abu Hurairah (may Allah be pleased with him) narrates that the Prophet Muhammad (peace and blessings be upon him) said:“May Allah have mercy on the man who gets up at night to pray and awakens his wife as well; if she refuses, he sprinkles water on her face. And may Allah have mercy on the woman who gets up at night to offer voluntary prayers and awakens her husband; if he does not get up, she sprinkles water on his face.”