The ten limbs have intrigued many, as he didn’t explicitly mention the details of the ten limbs. What he did write in detail was the Saptachatusthya, the sevenfold perfection in a fourfold manner. The saptachatusthya has been described in some detail in The Records of Yoga as below.
‘1) Siddhichatusthaya—Shuddhi, Mukti, Bhukti, Siddhi.
2) Brahma Chatusthaya—Sarvam Anantam Jnanam Anandam Brahma.
3) Karma Chatusthaya—Krishna, Kali, Karma, Kama
4) Shanti Chatusthaya—Samata, Shanti, Sukha, Hasya (Atmaprasada)
5) Shakti Chatusthaya—Virya, Shakti, Chandibhava, Sraddha.
6) Vijnana Chatusthaya—Jnana, Trikaladrishti, Ashtasiddhi, Samadhi
7) Sharira Chatusthaya—Arogya, Utthapana, Saundarya, Vividhananda’
(Ref. https://incarnateword.in/cwsa/10/outline-of-the-seven-chatusthayas-revised-order)
This was the program that Sri Aurobindo followed. He has described the practice in The Synthesis of Yoga in the chapters on The Yoga of Self-Perfection.
Of course, one can make a guess as to what might have been the ten limbs or those that he hasn’t described in the Records or the Synthesis. But it is best to receive what he has given and practice it than conjecture what he has held back.
Affectionately,
Alok Da
