সহায়িকা

The correct preposition is from, making the sentence: "He parted from his friends in tears," which means he separated or said goodbye to them, although "parted with his friends" is also used, often implying giving something up, but "from" is better for leaving people.
Part from: Used for leaving or separating from a person or place (e.g., parting from friends, leaving home).
Part with: Used for giving up or losing possession of something (e.g., parting with money, parting with a cherished item).

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