These two readings are forms IV and I of the same verb, with the same meaning, ascribed to God with the first-person majestic plural.
تَسْقِيْكُمُ
tasqīkum
"They give you drink"
The form I verb is here ascribed to the cattle etc. which produce the milk by God's will. Masculine and feminine pronouns can be alternated for this kind of plural.
Shpjegim
These readings provide complementary meanings [al-Alusi].
He has revealed to you ˹O Prophet˺ the Book in truth, confirming what came before it, as He revealed the Torah and the Gospel
Shpjegim
These readings provide complementary meanings [al-Alusi].