You must become absolutely familiar with it by constant study and practice, so that you can completely and utterly rely on it under conditions when it is your only guide.
Uyakuqhelana nayo ngozinzo ekuyifundeni nasekuziqheliseni nayo ukuba ugqibelele ekuxhomekekeni kuyo phantsi kwemeko xa iyiyo yodwa ekufuneka ikukhombise.