The Indian Space Research Organization (ISRO) is getting getting ready for Chandrayaan-4, the upcoming lunar mission, following the historic success of Chandrayaan-3. The mission of Chandrayaan-4 will include two extra components in addition to the lander, rover, and propulsion module that made up Chandrayaan-3. These components will be responsible for returning the samples from the Moon and releasing them back on Earth.

Chandrayaan-4 Details:
The rocket module of Chandrayaan-4 will direct it into lunar orbit, just like it did for Chandrayaan-3, before disengaging. 
Following the gathering and preservation of the Moon samples, the ascender module will detach from the lander and commence its journey back to Earth.

Nonetheless, the ascender module's extraction from lunar orbit will be the responsibility of the transfer module. 

In contrast, the three primary parts of Chandrayaan-3 were the propulsion module, the lander, and the rover. The rocket module, descender module, ascender module, transfer module, and re-entry module are the five spacecraft modules needed for Chandrayaan-4. 

In addition, the transfer module will return to Earth prior to the capsule with the samples of rock and soil detaching. The loose, unconsolidated layer of rock and dust covering solid rock that will return to Earth from the Moon will be transported by the re-entry module.

Chandrayaan-4 Primary Aspects:
The objective of ISRO's mission to the Moon and back is to collect samples, including rock samples, from the lunar surface and safely return them to Earth for scientific analysis. 

Another focus point for the ISRO include safe and gentle landings on the moon, the packaging of lunar samples, ascents from the moon's surface, docking and undocking in lunar orbit, sample transfers between modules, and re-entry and return to Earth for the delivery of samples.