בָּר֥וּךְ תִּֽהְיֶ֖ה מִכָּל־הָעַמִּ֑ים לֹא־יִהְיֶ֥ה בְךָ֛ עָקָ֥ר וַֽעֲקָרָ֖ה וּבִבְהֶמְתֶּֽךָ׃
Pagpapalain ka nang higit sa lahat ng bayan; walang magiging baog sa iyo, lalaki man o babae, ni sa iyong mga hayop.
Mishnah Berurah
You shall not make yourselves detestable - And if he holds himself back from urinating, he transgresses "you shall not make yourselves detestable" (Leviticus 11:43) as well as "there will not be among you a sterile male" (Deuteronomy 7:14). And one who holds himself back from passing gas does not transgress "you shall not make yourselves detestable". Also, the transgression of "you shall not make yourselves detestable" is pushed off when it comes to the dignity of people. For example, if a person holds back from relieving himself until he can find a private place, or similar. One should be very careful to clean himself very well [after relieving himself], because feces [found] anywhere [on his body is forbidden] with any amount, like is written in siman 76, se'if 5. And it's good to wash one's anus with water or spit.
Ramban
THEN WILL I GIVE YOUR RAINS IN THEIR SEASON. He mentioned the matter of rains first [of all the blessings] because if they come in their proper season, the air is pure and good and the springs and rivers are good [clear], and thus it [the rain] is a [prime] cause of physical health, and all produce will increase and be blessed by it, just as He said, and the Land shall yield her produce, and the trees of the field shall yield their fruit.1In Verse 4 before us. Thus because of this [pure state of the environment] people do not become sick, and none shall miscarry, nor be barren,2Exodus 23:26. even among their cattle,3See Deuteronomy 7:14. and they will live out [the full extent of] their days.4See II Samuel 7:12. For when the material frame [of human beings] is large and healthy, they can continue [in health] as in the days of Adam.5Adam lived nine hundred and thirty years (Genesis 5:5). See Ramban ibid., on Verse 4, (Vol. I pp. 98-99). Thus this [blessing — the rains in their seasons] is the greatest of all blessings [and therefore it is given first place].
Now He said that the heavens will respond to the earth6See Hosea 2:23. with rains in their seasons, and the earth shall respond7See ibid., Verse 24. with its “produce”, which includes vegetation and all moving creatures — cattle, beasts, creeping things and fowl, as well as fish — for the term ha’aretz [“the earth” or “the land,” in and ‘the land’ shall yield her produce] includes the whole of the lower sphere [i.e., everything under the sphere of the moon], just as [in the verses]: In the beginning G-d created the heaven and ‘ha’aretz’ (the earth);8Genesis 1:1. See Ramban ibid., Verse 3 (Vol. I, p. 25) where he discusses this topic fully, and mentions also the verses cited in the following text. And the heaven and ‘ha’aretz’ (the earth) were finished;9Ibid., 2:1. and similarly, Praise the Eternal from ‘ha’aretz’ (the earth), ye sea-monsters and all deeps,10Psalms 148:7. and so also in most verses in Scripture [where this word occurs]. Thus all things created in the lower spheres are “the produce of the earth.”
Now He said that the heavens will respond to the earth6See Hosea 2:23. with rains in their seasons, and the earth shall respond7See ibid., Verse 24. with its “produce”, which includes vegetation and all moving creatures — cattle, beasts, creeping things and fowl, as well as fish — for the term ha’aretz [“the earth” or “the land,” in and ‘the land’ shall yield her produce] includes the whole of the lower sphere [i.e., everything under the sphere of the moon], just as [in the verses]: In the beginning G-d created the heaven and ‘ha’aretz’ (the earth);8Genesis 1:1. See Ramban ibid., Verse 3 (Vol. I, p. 25) where he discusses this topic fully, and mentions also the verses cited in the following text. And the heaven and ‘ha’aretz’ (the earth) were finished;9Ibid., 2:1. and similarly, Praise the Eternal from ‘ha’aretz’ (the earth), ye sea-monsters and all deeps,10Psalms 148:7. and so also in most verses in Scripture [where this word occurs]. Thus all things created in the lower spheres are “the produce of the earth.”
Ramban
AND I WILL MAKE YOU FRUITFUL. This means that they will all have children, fruit of the womb, and there will be no barren man or woman among them.26See Deuteronomy 7:14. And then He stated again, and I will multiply you, meaning that they will have many children, and will not be bereaved of them, because they will live out their days,4See II Samuel 7:12. and therefore they will be a large people.