How many stitches are required, to consider the wool and linen to be linked: Menachot 39a
A temporary garment: Menachot 41a
Uses
Rabbinic prohibition against sleeping on Shatnez: Yoma 69a; Beitzah 14b
A shatnez burial shroud: Pesachim 40b
A shatnez curtain: Beitzah 14b
Sitting on tough, non-warming shatnez material: Beitzah 14b-15a
Salesmen of shatnez may carry it on themselves without intention for benefit; more careful people dangle it from a pole: Pesachim 26b Fooling another into sinning, in selling an item of clothing to a Nochri, where a Jew who buys it from him will not recognize the shatnez: Pesachim 40b
A shatnez donkey blanket: Pesachim 40b
Cushioning soles for shoes: Beitzah 15a
Small bags: Beitzah 15a
Other Issues
Tzitzit-Fringes remind a person of the prohibition against wearing mixtures of wool and linen: Menachot 43b
The punishment for wearing a mixed garment: Makkot 21a
Whether wearing such a mixed garment for an extended period of time, and/or through multiple warnings, is one violation or is many violations: Makkot 21a-b
To what degree one must remove a garment, to be liable anew when one puts it back on: Makkot 21b
Removing such a garment if one discovers it when in public: Berachot 19b
Wearing such a garment in public desecrates Gd's Name: Berachot 19b
Sending a Shatnez garment to a Jew on Yom Tov: Beitzah 14b
