Reference for Shabbat 126:5

בירית טהורה: אמר רב יהודה בירית זו אצעדה

moved [from its place]. Said the householder to her, 'Fear not: his fangs and claws have been extracted.' 'Take your favours and throw them on the thorns,' she retorted, 'the child has already moved.'

Jastrow

Jastrow