"The samadhi naturally experienced at rebirth comes to the videha yogis (who die after perfecting the ecstatic meditation) and prakriti-laya yogis ( who have accomplished the meditation accompanied by "I-am-ness") having dissolved the awareness of matter but without the final self-realization." Swami Veda Bharati.
Explanation: There are some practitioners of yoga who attain very advanced levels of meditative experience. Those who naturally and easily enter samadhi are re-born very accomplished yogis from birth. Yet, being born with the ability to enter samadhi does not mean that the yogi has attained the final enlightenment. Such yogis then can take up practice again to move farther toward complete union with the Ultimate.