四分律行事鈔資持記 2.243

2.243

因不定中，先明三善。一切者，三心俱時也。若起三毒，則有單具；若起三善，必不相離故。次明三品。不從一切者，三心不俱故。

Under 'indeterminate causes', he first explains the three wholesomenesses. 'All' means the three minds are simultaneous. If one gives rise to the three poisons, they may be single or complete; but if one gives rise to the three wholesomenesses, they are necessarily not separated from one another. Next he explains the three grades. 'Not from all' means the three minds do not occur simultaneously.