Musannaf Ibn Abi Shaybah 1804 — What is mentioned about the siwak

Abu Atiq said: I saw Sayyiduna Jabir (may Allah be pleased with him) using the miswak before sleeping, after getting up, and when going out for the Fajr prayer. I said to him: "Why have you put yourself through so much hardship!" He said: "Sayyiduna Usamah (may Allah be pleased with him) told me that the Messenger of Allah (peace and blessings be upon him) also used to use the miswak in this way."