Special Requests in the Torah Imply that Something Should be Different from Usual

Very brief notes on today's daf, which elaborates on Rabbi Akiva's ruling yesterday:

• the pasuk in Vayikra mentions a sin offering in particular
• how can this be applied to anything else?
• Rav Yehuda in the name of Shmuel tells the story of a student who serves his rabbi wine diluted with hot water; the rabbi asks for an another glass and that special request implies that something new should be added to the glass of wine
• The student would have served the same thing again if the rabbi made no request
• This relates to a sin offering as named in Vayikra - the Torah says - as a "special request" that the law applies to any sin offering
• Because it is a "special request", and would normally be read without further interpretation, we know that the law applies to all sacrifices