Yazid bin Haiyan (May Allah be pleased with him) reported:
I went along with Husain bin Sabrah and 'Amr bin Muslim to Zaid bin Arqam (May Allah be pleased with them) and, as we sat by his side, Husain said to him: "O Zaid, you acquired great merits that you saw Messenger of Allah ﷺ, listened to his talk, fought by his side in (different) battles, and offered Salat behind him. You have in fact earned great merits, Zaid! Could you then tell us what you heard from the Messenger of Allah ﷺ?" He said: "O my cousin! By Allah! I have grown old and have almost spent up my age and I have forgotten some of the things which I remembered in connection with Messenger of Allah ﷺ, so accept what I narrate to you, and what I fail to narrate, do not compel me to narrate that." He then said: "One day Messenger of Allah ﷺ stood up to deliver a Khutbah at a watering place known as Khumm between Makkah and Al-Madinah. He praised Allah, extolled Him and delivered the Khutbah and exhorted (us) and said, 'Amma Ba'du (now then)! O people, certainly I am a human being. I am about to receive a messenger (the angel of death) from my Rubb and I, in response to Allah's Call, but I am leaving among you two weighty things: the Book of Allah in which there is right guidance and light, so hold fast to the Book of Allah and adhere to it.' He exhorted (us) (to hold fast) to the Book of Allah and then said, 'The second are the members of my household, I remind you (of your duties) to the members of my family."'

فمنها حديث زيد بن أرقم رضي الله عنه -الذي سبق في باب إكرام أهل بيت رسول الله ﷺ -قال: قام رسول الله ﷺ فينا خطيباً، فحمد الله، وأثنى عليه، ووعظ وذكر، ثم قال: “أما بعد”ألا أيها الناس إنما أنا بشر يوشك أن يأتي رسول الله ربي فأجيب، وأنا تارك فيكم ثقلين :" أولهما: كتاب الله، فيه الهدى والنور، فخذو بكتاب الله، واستمسكوا به” فحث على كتاب الله، ورغب فيه، ثم قال: “وأهل بيتي، أذكركم الله في أهل بيتي" ((رواه مسلم)) وقد سبق بطوله.