Reference for Chullin 29:18
רבי יוחנן הסנדלר קמפליג במוצאי שבת לאחרים ולא לו תנא דידן שחיטתו כשרה קתני לא שנא לו ולא שנא לאחרים
A Tanna recited before Rab: If a man cooked food on the Sabbath inadvertently, even he himself may eat of it, but if deliberately he may not eat of it.
Jastrow
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Beit Yosef
And regarding cooked food Rabbi Meir holds if done not extra permitted even on the same day (on shabbat)
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