Related על ראש השנה 4:8

Man practices on the Sabbath in bubbles. Neither women nor children are prevented from praying on the Sabbath to blow; and one doesn't even have to say: on a holiday.

There are four kinds of devotion and four kinds of religious duty: If someone write two letters, whether in holy scriptures, whether in profane scriptures, or weave threads, be it on sacred clothing, be it on profane one’s clothes, if it is on the Sabbath he is obligated to make a sin offering; if it happens on the holiday, he gets the forty lashes. (If someone writes a letter, whether in holy scriptures, whether in profane scriptures, or weave threads, be it on sacred clothing, be it on profane one’s clothes, if it is on the Sabbath he is obligated to make a sin offering; if it happens on the holiday, he gets the forty lashes.) These are words of R. Eliezer. But the Sages said: Spit it on the Sabbath, whether it be on the holiday - he is guilty only for violating the rest. One is not allowed to sit in court, nor betroth, neither divorce nor refuse, neither take off one's shoe nor consummate the marriage of brothers and sisters. One may neither make an endowment, nor vow the appraised value, nor consecrate by ban, nor separate heave or tithes. All this they said in relation to the holiday, and therefore a fortiori - in relation to the Sabbath. The difference between the holiday and the Sabbath is only in the preparation of "human food”. Regarding all these acts, if one has done them, whether under compulsion, whether negligently, whether intentionally, or induced, what he did remains done.