瑜伽師地論略纂 5.112

5.112

第三喻中，「水喻離喜無尋伺定乃至喻花胎藏設在水中」者，此言意顯第二定如水，因喜動湧，如花出水，花喻喜故。今第三定離喜無尋伺亦如水，其樂如花胎藏胞未開剖，猶在水中，名花胎藏。與定相順，不動湧故，如在水中。

In the third simile, regarding "Water symbolizes the samādhi free of joy and without vitarka or vicāra, up to symbolizing the calyx of a flower immersed in water": what these words intend to show is that the second dhyāna is like water, stirred and welling up due to joy, like a flower emerging from water, for the flower symbolizes joy. Now the third dhyāna is free of joy and without vitarka or vicāra, and is likewise like water; its bliss is like the calyx of a flower whose bud has not yet opened and burst, still remaining in the water, which is called the calyx of a flower. It accords with samādhi and is unstirred and not welling up, like being in water.