Abdullah bin `Umar added: Later on Allah's Apostle and Ubai bin Ka`b Al-Ansari (once again) went to the garden in which Ibn Saiyad was present. When Allah's Apostle entered the garden, he started hiding behind the trunks of the date-palms intending to hear something from Ibn Saiyad before the latter could see him. Ibn Saiyad was Lying on his bed, covered with a velvet sheet from where his mumur were heard. Ibn Saiyad's mother saw the Prophet and said, O Saf (the nickname of Ibn Saiyad)! Here is Muhammad! Ibn Saiyad stopped his murmuring. The Prophet said, If his mother had kept quiet, then I would have learnt more about him.