Siman 351
Presented here for study, not as a practical ruling. The Shulchan Aruch rules by Sephardi custom, the Rema's glosses by Ashkenazi custom, and the Kitzur follows Ashkenazi custom. For a practical question, ask your rabbi.
א תַּכְרִיכֵי הַמֵּת, מֻתָּר לַעֲשׂוֹתָן מִכִּלְאַיִם.
1 One is permitted to make the dead person's shrouds from diverse kinds.
ב אֵין קוֹבְרִין אֶת הַמֵּת אֶלָּא בְּטַלִּית שֶׁיֵּשׁ בּוֹ צִיצִית. הַגָּה: וְיֵשׁ אוֹמְרִים דְּאֵין צָרִיךְ צִיצִית (טוּר בְּשֵׁם י"א). וְנָהֲגוּ לְקָבְרוֹ בְּצִיצִית, אַךְ שֶׁפּוֹסְלִין תְּחִלָּה הַצִּיצִית, אוֹ כּוֹרְכִין אֶחָד מִן הַכַּנְפוֹת.
2 One buries the dead only in a Talith that has Ẓizith. Rema: Some say that Ẓizith are not required; and the accepted practice is to bury him with Ẓizith, only that one first disqualifies the Ẓizith or one twines around one of the corners [ of the Talith ].