Halakhah su Proverbi 31:8

[If] the Judge noticed aught in favour of one of the parties and the litigant [who is aware of this] desires to state it but knows not how to put together [his] arguments, or they [the Judges] saw him having trouble to defend himself in [the presentation of his] true pleas and [only] on account of [his] excitement and anger [this valid argumentation] escaped him, or he became confused because of ineptitude, — [the law is that] in such a case he [the Judge] is permitted to assist him and give him to understand [how to present] the opening of [his] case on account of 'Open thy mouth for the dumb.'³⁸Y. San. III, 8(21c): ‘When R. Huna would know of a plea in favour of a party to a lawsuit and he (the litigant) would not know of it (i.e., he is unable to plead his own cause), he (R. Huna) would suggest (this) to him because of Open thy mouth for the dumb (Prov. XXXI, 8).’ On the principle Open thy mouth for the dumb, v., Ket. 36a; B.B. 41a; Git. 37b. However, one must give very careful consideration regarding this matter in order not to play the part of an advocate.³⁹e., to be careful as Judge not to suggest an advice to one of the litigants. If the litigant is an imbecile (שוטה), we may plead in his behalf, for he is unable to plead his cause as in the case of orphans — Tummim.