It is narrated from Hazrat Zaid bin Khalid (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: If I did not fear hardship for my ummah, I would have commanded them to use the miswak at the time of every prayer. For this reason, whenever Hazrat Zaid bin Khalid (may Allah be pleased with him) would go to the mosque, the miswak would be placed on his ear in the same way as a scribe keeps his pen, and when the iqamah was called, he would use the miswak before starting the prayer.
Hadith Referenceمسند احمد / مسند الأنصار رضي الله عنهم / 21684
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد ضعيف، محمد بن إسحاق مدلس، وقد عنعن، لكنه توبع