וַיְבָרֲכֵ֣ם וַיִּרְבּ֣וּ מְאֹ֑ד וּ֝בְהֶמְתָּ֗ם לֹ֣א יַמְעִֽיט׃
He blesseth them also, so that they are multiplied greatly, And suffereth not their cattle to decrease.
Read kabbalistic (mystical) interpretation of Psalms 107:38: and classical mystical sources.