Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 1 year ago

Yes. It is narrated as one of the Mustahab (recommended) recitations in Tashahhud.

أشهد ان لا اله الا الله وحده لا شريك له واشهد ان محمدا عبده ورسوله ارسله بشيرا ونذيرا بين يدي الساعة . اللهم صل على محمد وآل محمد 

It is mentioned in many jurisprudence books like al-'Orwatul Wothqa and other books beside our books of Hadeeth like Wasaa'il al-Shia.