Sahih Adab al-Mufrad

739/(958/2)- Abdullah ibn Umar said: After that, the Prophet, peace be upon him, and Ubayy ibn Ka'b al-Ansari went one day to the palm trees where Ibn Sayyad was. When the Prophet, peace be upon him, entered, he began to shield himself behind the trunks of the palm trees, while he was hearing something from Ibn Sayyad before seeing him. Ibn Sayyad was lying on his bed, wrapped in a blanket, murmuring something. The mother of Ibn Sayyad saw the Prophet, peace be upon him, as he was shielding himself behind the trunks of the palm trees, and she said to Ibn Sayyad: "O Saf! (that was his name), this is Muhammad." So Ibn Sayyad stopped. The Prophet, peace be upon him, said: "If she had left him, it would have become clear."