@bot.command(pass_context=True)
async def mute(context):
    if len(context.message.content.split()) < 2:
        await send_message(channel=context.message.channel,
                           message='Syntax: a!mute [hours] @Person1... @Person99')
        return
    hours = context.message.content.split()[1]
    hours = float(hours) if hours.replace('.', '').isnumeric() else None
    if hours is not None and not 0 < hours <= 24:
        await send_message(channel=context.message.channel,
                           message='Can only mute between 1 - 24 hours')
        return
    mentions = context.message.mentions
    if not mentions:
        await send_message(channel=context.message.channel,
                           message='You must mention a person for this command.')
        return
    for mention in mentions:
        if hours:
            hours_string = ''
            if hours >= 1:
                hours_string = ' {hours} hours'.format(hours=int(hours))
            minutes_string = ''
            minutes = (hours - int(hours)) * 60
            if int(minutes):
                if hours_string:
                    minutes_string += ' and'
                minutes_string += ' {minutes} minutes'.format(minutes=int(minutes))
            seconds_string = ''
            seconds = (minutes - int(minutes)) * 60
            if seconds:
                if hours_string:
                    seconds_string += ' and'
                seconds_string += ' {seconds} seconds'.format(seconds=int(seconds))
            await send_message(channel=context.message.channel,
                               message='Muting {mention} for{hours}{minutes}{seconds}!',
                               mention=mention,
                               hours=hours_string,
                               minutes=minutes_string,
                               seconds=seconds_string),
        else:
            await send_message(channel=context.message.channel,
                               message='Muting {mention} permanently!',
                               mention=mention)
        await bot.server_voice_state(member=mention,
                                     mute=True)
    if hours:
        duration = hours * 3600
        await asyncio.sleep(duration)
        for mention in context.message.mentions:
            await send_message(channel=context.message.channel,
                               message='Time is up, unmuting {mention}.',
                               mention=mention)
            await bot.server_voice_state(member=mention,
                                         mute=False)