Narrated `Abdullah bin `Umar: Allah’s Messenger (ﷺ) said, “A Muslim is a brother of another Muslim. So he should neither oppress him nor hand him over to an oppressor. And whoever fulfilled the needs of his brother, Allah will fulfill his needs.”

Sahih Bukhari
Reference: Sahih al-Bukhari 6951 ((Statements made under) Coercion)
In-book reference:Book 89, Hadith 12