[ULPIANUS libro singulari de officio praetoris tutelaris. ] §27.1.5.prTria onera in domo una esse sufficit: proinde si pater alicuius uel filius uel frater qui est in eiusdem potestate tria onera sustineat, quae ad periculum patris sui spectent, quia uoluntate eius administrant, omnibus excusatio a tutela competit.
[ULPIAN from his single book on the Office of the Tutelary Praetor.] It is sufficient for there to be three burdens in one household: hence, if someone's father, or son, or brother who is under the power of the same head of the household, bears three burdens which fall upon the risk of their father, because they administer them by his consent, an excuse from guardianship is available to all.
sed si non patris uoluntate administrent, non prodesse saepe rescriptum est.
But if they do not administer them by the father's consent, it has often been stated in rescripts that this is of no benefit.