I was informed by Abū ʿAbdillāh about the dutifulness of his son Ismāʿīl towards him. He said, ‘I used to love him, and now my love for him has increased. Verily the Messenger of Allah (ṣ) was visited by his foster sister. When he saw her, he was pleased and spread out his cloak for her and made her sit on it. Then he began speaking with her and smiling at her. Later, she stood up and left. Subsequently, her brother came [to visit him] but he did not treat him as he had treated her. Someone asked, “O Messenger of Allah, you treated his sister in a different way than how you treated him while he is a man?” He replied, “Because she was more dutiful to her father than him.”’”