Is it permitted to account for a Musharakah in the same way that traditional banks account for its financing, i.e., by managing an account with debits and credits and netting them off at the end of the period to arrive at profit or loss? 

Is it legal to hold a Musharakah partner personally accountable for a transaction entered into on that partner's recommendation or judgment if the Musharakah suffers a loss as a result?