Midrash for Chullin 269:32
סד"א
This is well according to him who says that animals consecrated to the Temple treasury are not subject to the law of 'standing up to be appraised', but what can you say according to him who says that they are subject to this law? - R'Mani B'Pattish suggested in the name of R'Jannai: We are referring here to the case of a man who consecrated to the Temple treasury his animal apart from its fleece.
Sifrei Devarim
"your flock": and not that of others (i.e., of gentiles [that you have purchased]). From here it was ruled that one who purchases the shearing of a flock belonging to gentiles is exempt from the (obligation of) the first of the shearing. The shearing of his flock (that he purchased) from his neighbor — if the seller left over (of the shearing itself) for himself, the seller is liable (for the first of the shearing); if he did not, (i.e., if he told the buyer: The first of the shearing of the Cohein is with you), the buyer is liable.
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Sifrei Devarim
"shall you give to him": There must be enough for a gift — whence they ruled: How much does he give him? The weight of five selaim in Yehudah, which is ten in the Galil, cleansed, for the making of a small garment.
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