The Prophet (peace and blessings be upon him) said: "There are three things that are obligatory for me and sunnah for you: witr, the tooth-stick (miswak), and standing in prayer at night."
This Musa bin Abd al-Rahman is very da'if (weak), and no chain on this is established. And Allah knows best.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13272