Hazrat Qasim narrates that I was with Hazrat Ibn Abbas (may Allah be pleased with them) when a woman came and said, "I have made a vow that I will sacrifice my son." Hazrat Ibn Abbas (may Allah be pleased with them) said to her, "Do not sacrifice your son and pay the expiation for your oath." There was a man present with Hazrat Ibn Abbas (may Allah be pleased with them) who said, "A vow involving disobedience is not to be fulfilled (and there is no expiation for it)." Hazrat Ibn Abbas (may Allah be pleased with them) said, "Did Allah Almighty not say regarding the issue of zihar: { وَاِِنَّہُمْ لَیَقُوْلُوْنَ مُنْکَرًا مِّنَ الْقَوْلِ وَزُورًا } Then he said, 'In this there is the expiation which you have heard about.'"