Activities of a Disciple in Separation from Spiritual Master

In SB 4.28 "Puranjana Becomes a Woman in the Next Life" -King Puranjana owing to excessive attachment to his wife and being engrossed in thoughts of worrying about her at the time of death, he is born as a woman in his next life. He takes birth as the daughter Vaidarbhi of King Vidarbha.

Vaidarbhi gets married to King Malayadhvaja and during vanaprastha follows her husband and serves him and performs austerities herself. Her relationship with her husband is compared with the relationship of the disciple with his Spiritual Master. The example and comparison teaches us at two levels:

1. Vanaprastha duties for wife and husband
2. Relationship of disciple with spiritual master

This post has been drawn out from Srila Prabhupada's purports on point 2.

Synopsis:
Making the order and mood of the spiritual master as one's life and soul is extremely important.
If one is successful in doing that one can imbibe the spiritual master's teachings and thus serve as an instrument in the mission of the spiritual master and Krishna.

If one fails to do that one will not be able to fulfill his duty as a disciple as enunciated below.
thus one should use one's life in training as per the guidance of the spiritual master and eventually fulfilling the spiritual masters preaching mission/desires in the process.

References from purports:

1. When one is trained by the spiritual master in devotional service, the disciple should allow the spiritual master to retire from active preaching work and engage in nirjana- bhajan. The disciple should take preaching activities in their own hands. SB 4.28.33
2. The disciple and spiritual master are never separated because the spiritual master always keeps company with the disciple as long as the disciple follows strictly the instructions of the spiritual master. When the spiritual master is no longer present one should serve his instructions just like when he is present one serves his physical body. SB 4.28.47
   
3. When an acarya disappears rogues and non-devotees take advantage and immediately introduce unauthorized principles. However the perfect disciples of the acarya try to relieve the situation by sincerely following the instructions of the spiritual master.SB 4.28.48
   
4. A devoted disciple of the spiritual master would rather die with the spiritual master than fail to execute the spiritual master's mission.To execute the will of the spiritual master , the disciple should be prepared to lay down his life and abandon all personal considerations.SB 4.28.51