The Messenger of Allah ﷺ said, "Beware of suspicion, for suspicion is the most untruthful form of speech. Do not spy on one another, do not eavesdrop, do not compete against one another, do not envy one another, do not hate one another, do not turn your backs on one another, and be servants of Allah as brothers."
أن رسول الله ﷺ قال: إياكم والظن، فإن الظن أكذب الحديث، ولا تجسسوا، ولا تحسسوا، ولا تنافسوا، ولا تحاسدوا، ولا تباغضوا، ولا تدابروا، وكونوا عباد الله إخوانا.
Malik narrated it in Husn al-Khuluq (15), from Abu Zinad, from Araj, from Abu Hurairah, and he mentioned it.Bukhari narrated it in al-Adab (6066), and Muslim in al-Birr wa al-Silah wa al-Adab (2563), both of them through the route of Malik, similarly.