|   Mode  of determining existence of partnership   6. In  determining whether a group of persons is or is not a firm, or whether a person  is or is not a partner in a firm, regard shall be had to the real relation  between the parties, as shown by all relevant facts taken together. Explanation  1 : The sharing of profits or of gross returns arising from  property by persons holding a joint or common interest in that property does not  of itself make such persons partners. Explanation  2 : The receipt by a person of a share of the profits of a  business, or of a payment contingent upon the earning of profits or varying with  the profits earned by a business, does not of itself make him a partner with the  persons carrying on the business; and  in particular, the receipt of such share or payment— 
    
        
            | (a) |  | by          a lender of money to persons engaged or about to engage in any business, |  
            | (b) |  | by          a servant or agent as remuneration, |  
            | (c) |  | by          the widow or child of a deceased partner, as annuity, or |  
            | (d) |  | by          a previous owner or part owner of the business, as consideration for the          sale of the goodwill or share thereof, |    does  not of itself make the receiver a partner with the persons carrying on the  business.   |