Custom message without translation

Is there a way to add custom messages in code without using translation?

For example:

        $rules = [
            'card_number' => ['required', new CardNumber],
            'expiration_year' => ['required', new CardExpirationYear($request->input('expiration_month'))],
            'expiration_month' => ['required', new CardExpirationMonth($request->input('expiration_year'))],
            'cvc' => ['required', new CardCvc($request->input('card_number'))],
        ];

        $messages = [
            'required' => 'The :attribute field is required',
            'card_number.validation.credit_card.card_invalid' => 'Credit card is invalid'
        ];

        $validator = Validator::make($request->all(), $rules, $messages);

[shilpatipl]

I've same issue and I can't give custom messages

public function rules() {
        $rules = [
            'card_number' => ['required', new CardNumber],
            'expiry_year' => ['required', new CardExpirationYear($this->get('expiry_month'))],
            'expiry_month' => ['required', new CardExpirationMonth($this->get('expiry_year'))],
            'cvv' => ['required', new CardCvc($this->get('card_number'))]
        ];
    }
    return $rules;
}

public function messages() {
    return [
        'required' => 'The :attribute field is required',
        'card_number.validation.credit_card.card_invalid' => 'Credit card is invalid',
        'card_number.validation.credit_card.card_length_invalid' => 'Credit card is invalid'
    ];
}

public function failedValidation(Validator $validator) {
    throw new HttpResponseException(response()->json($validator->errors(), 422));
}

[zakir1929]

add this code into any of your service provider boot method

Validator::replacer('cs_captcha_validate', function($message, $attribute, $rule, $parameters) {
            return sprintf('Recaptcha Invalid', $attribute);
}); 

    here cs_captcha_validate is the input field