“‘Personally’ (ذاتی طور پر) means specifically, that in this there is a greater possibility of intoxication. Or it could also mean that the prohibition of preparing nabidh in a gourd vessel is not due to the possibility of intoxication, but rather because it is a gourd vessel, i.e., it is prohibited in all circumstances. However, this meaning is less preferred in light of other ahadith. And Allah knows best.”
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 5642