1. From Ubayy ibn Kaʿb, that the Prophet said: ‘Whoever reads Sūrat al-Najm will be given ten times the goodly reward of the number of people who believed in Muhammad (s) and who opposed him.’^{‎[1]Tabrisi, 9/285.}
2. From Yazīd ibn Khalīfah, that Imam al-Ṣādiq (a) said: ‘Whoever continuously recites [Sūrat] al-Najm every day or every night will live honoured amongst the people and will be missed and loved amongst them.’^{‎[2]Tabrisi, 9/285.}

Without a doubt, these rewards are for the one who has understood the message of the surah and has lived by it.^{‎[3]Nemuneh, 22/475.}

[1] Tabrisi, 9/285.
[2] Tabrisi, 9/285.
[3] Nemuneh, 22/475.