A person who tolerates all kinds of troubles, even though such troubles appear to be unbearable, is called forbearing.
When Kṛṣṇa was residing at the place of His spiritual master, He did not mind taking all troubles in rendering service to His guru, although His body was very soft and delicate. It is the duty of the disciple to execute all services unto the spiritual master, despite all kinds of difficulties. The disciple living at the residence of the spiritual master has to go begging from door to door and bring everything back to the spiritual master. When prasāda is being served, the spiritual master is supposed to call each and every disciple to come eat. If by chance the spiritual master forgets to call a disciple to partake of the prasāda, it is enjoined in the scriptures that the student should fast on that day rather than accept food on his own initiative. There are many such strictures. Sometimes, also, Kṛṣṇa went to the forest to collect dry wood for fuel.