Muslims should treat their friends with kindness, respect, loyalty, and compassion, following the teachings of Islam. They should support their friends in times of need, encourage good deeds, offer sincere advice, and maintain trust and honesty in their relationships. The Prophet Muhammad (PBUH) said, “The strong believer is better and more beloved to Allah than the weak believer, while there is good in both” (Sahih Muslim), emphasizing the importance of being a good influence and companion.