Sayyiduna Ibn Umar (may Allah be pleased with them both) narrates that we were with the Prophet Muhammad (peace and blessings be upon him) when a date palm stalk was brought to him. The Prophet (peace be upon him) said: Among the trees, there is a tree... (and he narrated the entire hadith). (See the Book: The Statement of Knowledge... Chapter: The Imam asking questions to his companions to test their knowledge...) And in this narration (Ibn Umar, may Allah be pleased with them both) added that I was the youngest, so I remained silent.