Talmud for Psalms 3:2

One does not recite a verse over a wound on the Sabbath; the one which one recites about mandrakes¹³¹Mandrakes are mentioned in Gen.30:14–16,Cant. 7:14. is forbidden. Come and recite this verse for my son who is afraid, put on him a scroll¹³²A Torah scroll. It is forbidden to use sancta as charms., put on him phylacteries, so he will go to sleep, is forbidden. But did we not state, they used to recite the Song of the Afflicted in Jerusalem? Rebbi Yudan said, one means after he was hurt, the other before he was hurt¹³³Reciting verses as prophylactics is permitted. Babli 61a.. What is the Song of the Afflicted? Eternal, how many are my oppressors, and the entire Psalm¹³⁴Psalm 3.. Sitting in the shelter of the Most High up to: Truly, You, Eternal, are my refuge, the Most High you put as your help¹³³Reciting verses as prophylactics is permitted. Babli 61a..