易筋洗髓具非东土之文章，总是西方之妙谛，不因祖师授受，予安得而识之？又乌自而译之也哉？！
我祖师大发慈悲，自西徂东，餐风宿露，不知几历暑寒，航海登山，又不知几历险阻，如此者岂好劳耶？
悲大道之多歧，将愈支而愈离，恐接绪之无人，致慧眼之淹没。遍观诸教之学人，咸逐末而忘本，每在教而
泥教，谁顺流而穷源，忽望霞旦，白光灼天，知有载道之器，可堪重大之托，此祖师东来之大义也！
初至陕西敦煌，遗留汤钵于寺。次及中州少林，面壁趺跏九年，不是心息参悟，亦非存想坐功，总
因因缘未至，姑静坐久留，以待智人参求耳。及祖师示人为第一义谛，闻者多固执宿习，不能领略，再请，
予何人斯，幸近至人，耳提面命，顿超无上，正传正觉，得易筋洗髓二帙。洗髓义深，精近无基，初学
难解，其效亦难，至是为末后之究竟也。及其成也，能隐能显，串金透石，脱髓圆通，虚灵长活，聚而
成形，散则为风，然未可一蹴而至也。易筋义浅，入手有据，初学易解，其效易臻，堪为筑基之初起。
是必易筋之功竟，方可因之洗髓。予得师传，习易筋已效，将易筋原本一帙，藏之少林壁间，俟有缘者
得之。惟洗髓一帙，附之衣钵，远游云水，后功行至，果获奇应，曾不敢轻易告人，又
恐久而失传，辜负祖师西来之意。于是不揣鄙陋，译为汉语，止求不悖经文，不敢致饰章句，根据经详译
于后，并为序言于前，以俟智者之玩味而有得也。（释慧可谨序）
《易筋经》与《洗髓经》并非中原地区的著作，而是源自西方的精妙真理。若非祖师亲自传授，我怎能知晓？又怎能自行翻译呢？
我的祖师大发慈悲，从西方来到东方，餐风宿露，不知经历了多少个寒暑；航海登山，不知遭遇了多少险阻。这样做难道是喜欢劳累吗？
是因为悲叹大道分支众多，导致人们越走越偏离本源；担心传承断绝，致使慧眼被淹没。遍观各教派的学者，都追逐细枝末节而忘记根本，往往拘泥于教法本身。谁愿意顺流而下以穷究源头？忽然间，晨曦霞光中，白光灼烧天空，我知道有承载大道的法器（指人），可以承担重大的托付，这就是祖师东来的大义！
起初到达陕西敦煌，在寺庙里留下了汤钵。接着来到中原的少林寺，面壁打坐九年。这并非通过心息参悟，也不是依靠存想坐功，总因机缘未到，姑且静坐久留，等待有智慧的人前来探求罢了。等到祖师展示“第一义谛”给人看时，听者大多固执于旧有的习气，不能领会。再次请求后，我是何等人，有幸接近圣人，得到亲口教导，顿时超越至高境界，获得正传正觉，得到了《易筋经》和《洗髓经》两卷书。
《洗髓经》义理深奥，精微之处没有基础难以入手，初学者难以理解，其功效也难以达到，这是最后的究竟境界。等到修成之后，能隐能显，串金透石，脱去凡胎骨髓达到圆通境界，虚灵长久活泼，聚拢则形成形体，散开则化为风，但这不是一蹴而就就能达到的。
《易筋经》义理浅显，入门有据可循，初学者容易理解，其功效也容易达成，可以作为筑基的起始阶段。因此，必须等《易筋经》的功夫完成，才可以凭借它来修炼《洗髓经》。
我得到师父传授，练习《易筋经》已见成效，将《易筋经》原本一卷，藏在少林寺墙壁之间，等待有缘人得到它。只有《洗髓经》一卷，附在衣钵之中，云游四海，后来功夫到了，果然获得奇异感应，曾不敢轻易告诉别人，又怕时间久了失传，辜负了祖师西来的心意。于是不自量力，将其译为汉语，只求不违背经文原意，不敢刻意修饰章句，根据经文详细翻译在后面，并作为序言在前面，以此等待有智慧的人品味并获得心得。（释慧可谨序）
The *Yijin Jing* (Muscle Change Classic) and the *Xisui Jing* (Marrow Washing Classic) are not writings of the Central Plains, but rather the profound truths from the West. Without the direct transmission from the Patriarch, how could I have known them? And how could I translate them on my own?!
My Ancestor manifested great compassion, traveling from the West to the East, enduring wind and dew, experiencing countless seasons of heat and cold; sailing seas and climbing mountains, encountering numerous dangers and obstacles. Was this done out of a love for labor?
It was because he grieved that the Great Dao had many branches, causing people to drift further away from the source as they diverged; fearing that the lineage would be cut off, leading to the submersion of wisdom eyes. Observing scholars of all sects, they all pursued trivial details while forgetting the root, often becoming stuck within their specific teachings. Who would follow the current to trace its source? Suddenly, amidst the dawn clouds, white light illuminated the sky. He knew there were vessels capable of bearing the Dao, worthy of this great responsibility. This is the great meaning behind the Patriarch's journey to the East!
Upon first arriving at Dunhuang in Shaanxi, he left his alms bowl in the temple. Subsequently, he went to Shaolin Temple in the Central Plains, where he sat facing the wall in meditation for nine years. This was not through contemplation of mind and breath, nor through visualization practices. It was simply because the conditions were not yet ripe, so he remained in quiet sitting for a long time, waiting for those with wisdom to seek him out. When the Patriarch demonstrated the "First Meaning" (the ultimate truth) to others, most listeners were stubbornly attached to their old habits and failed to comprehend. After repeated requests, I—who am I?—was fortunate to approach the Sage, receiving personal instruction. I suddenly transcended to the supreme state, obtaining the orthodox transmission and awakening, thereby acquiring the two volumes: *Yijin Jing* and *Xisui Jing*.
The *Xisui Jing* has profound principles; its subtlety lacks a foundation for beginners, making it difficult for novices to understand and hard to achieve its effects. Thus, it represents the final consummation. Upon completion of its practice, one can become invisible or visible, pierce metal and stone, shed the marrow to achieve perfect penetration, and possess a void-like, agile vitality. One can condense into form or disperse into wind. However, this cannot be achieved overnight.
The *Yijin Jing* has simpler principles, providing a clear entry point, making it easy for beginners to understand and quick to yield results. It serves as the initial stage for building the foundation. Therefore, only after the work of *Yijin Jing* is complete can one proceed to practice *Xisui Jing* based on it.
Having received the master's transmission, I practiced *Yijin Jing* and saw results. I hid the original volume of *Yijin Jing* within the walls of Shaolin Temple, awaiting someone with affinity to find it. Only the volume of *Xisui Jing* was attached to the robe and bowl. I traveled far and wide like cloud and water. Later, when my karmic merit and practice reached a certain level, I indeed obtained miraculous responses. I dared not casually tell others, yet I feared that over time it might be lost, betraying the Patriarch's intention in coming from the West. Thus, without presuming upon my own limitations, I translated it into Chinese, seeking only not to deviate from the scripture's meaning, daring not to embellish the sentences. Based on the scripture, I provide a detailed translation below, and place this preface before it, awaiting the wise to savor and gain insight. (Respectfully Prefaced by Shi Huike)