Weak ḥadīth about durūd

❓Question: Assalamualaykum. Is the following ḥadīth reliable? It has been reported by Sayyiduna ibn 'Abbās (may Allāh be pleased with them both) that Rasūl Allāh (peace and blessings of Allāh be upon him) said: “The reward of the person who recites the following durūd, will be the cause of much work (of writing) for seventy angels for one thousand days.” Those words are: “Jazal lāhu 'anā Muḥammadan mā huwa ahluhu.”