Psalms 137:9 Halakhah

אַשְׁרֵ֤י ׀ שֶׁיֹּאחֵ֓ז וְנִפֵּ֬ץ אֶֽת־עֹ֝לָלַ֗יִךְ אֶל־הַסָּֽלַע׃

Happy shall he be, that taketh and dasheth thy little ones Against the rock.

Read halakhic rulings (Jewish law) on Psalms 137:9: and classical halakhic sources.