📖 Thawban RadhiAllahu 'anhu narrated that Allah's noble Messenger Muhammad SallAllahu 'alaihi wa sallam said, "I certainly know people from my nation who will come on the Day of Resurrection with good deeds like the mountains of Tihamah, but Allah will scatter them like dust." Thawban RadhiAllahu 'anhu said, “O Messenger of Allah, describe them to us and tell us more, so that we will not become like them.” The Prophet Muhammad SallAllahu 'alaihi wa sallam said, "They are your brothers and from your ethnicity, taking up worship at night as you do, but they will be people who transgress the sacred limits of Allah (Subhaanahu wa Ta'aala) when they are alone."
Source: Sunan Ibn Mājah 4245
Grade: Sahih (Authentic) according to Al-Albani
https://binbaz.org.sa/fatwas/11592/%D8%A8%D9%8A%D8%A7%D9%86-%D9%85%D9%86-%D8%AA%D9%83%D9%88%D9%86-%D8%A7%D8%B9%D9%85%D8%A7%D9%84%D9%87%D9%85-%D9%87%D8%A8%D8%A7%D8%A1-%D9%85%D9%86%D8%AB%D9%88%D8%B1%D8%A7-%D9%8A%D9%88%D9%85-%D8%A7%D9%84%D9%82%D9%8A%D8%A7%D9%85%D8%A9