Rav and Shmuel discuss the differences in when the merchandise is acquired if you say I am buying all of it for one price or if you specify\u00a0how much each measurement (for ex. each se’ah) will cost (even though you are buying many se’ah). \u00a0Two sources are brought to contradict\u00a0their opinion but are resolved. \u00a0The next mishna discusses 3 different halachot – one pertaining to at what point of measuring is neither side allowed to change their mind, the next pertained to a middleman – and is he responsible if the vessel breaks and the merchandise is lost (wine or oil) (exactly what the case is is debatable), and what is the status of drops left in the jug after if it measured out and poured into the buyers utensils? \u00a0 Details of these cases are discussed int he gemara. \u00a0The next mishna\u00a0is a case where a father sends a son to the store to buy oil and the utensil breaks, the oil is lost, as is the change that the son received. \u00a0There is a debate about who is responsible. \u00a0Based on details in the mishna, the gemara grapples to understand what exactly is the case in the mishna\u00a0and what is the source of the debate.<\/p>\n