(Exodus 13:3) "This day you go out in the month of Aviv (spring)": Let this not be written (i.e., Why is it needed?) (To signify) a month that is kasher — neither burning sun nor (heavy) rains. And thus is it written (Psalms 68:7) "G–d settles the solitary in their homes. He takes out the bound bakosharoth." What is the intent of "bakosharoth"? A month that is kasher for you. Neither burning sun nor (heavy) rains.