Shalom There is a commonly known principle of אין מוקדם ומאוחר בתורה However, I have not been able to find the source for it. According to one source, it is in the introduction to Mishnat Rabbi Eliezer [b. Rabbi Yose ha-Galili] as found in Midrash HaGadol (Yemen) as part of the beraita of 32 rules. However, my copy of this text does not have it. I would be grateful if you could help identify the source, and possibly the context in which it is given. Shalom uvrakha Tzvi-Gad ben ReMA [email protected]

Shalom, Thank you for your question. This concept is quoted in the Gemera (see for example Pesachim 6b for a good example of this rule and when it is applied). As for its early sources – it is quoted in the following sources – Mechiltah D’Rebi Yishma’el – Mesechta D’Shira 7 Mechiltah D’Rashbi – Chapter 15 Sifri Bamidbar – Parshat Behalotcha, pesiktah 64 Talmud Yerushalmi – Megillah 7a Briatah of 32 midot of Rebi Eli’ezer (son of Rebi Yosi Haglili) midah 31 and 32. I hope this is of some help to you. Blessings.