I forbid you to prepare nabidh in a gourd, hollowed block of wood, a varnished jar or receptacle. Ibn Mu'adh made this addition on the authority of his father that the Messenger of Allah said to Ashajj, of the tribe of 'Abdul-Qais: You possess two qualities which are liked by Allah: insight and deliberateness.
Sahih Muslim Book 1, Hadith 25