His possession of the Rinnegan and Eternal Mangekyo Sharingan also made him one of the few capable of interpreting the tablet's contents in their entirety.

Source: https://gamerant.com/naruto-how-the-stone-tablet-was-the-series-worst-retcon/

In the face of this, it is worth noting that Nagato, both as Pain and in his youth, was unable to draw on the full power of the Rinnegan as he was not the one who originally awakened it.

Source: https://gamerant.com/naruto-chibaku-tensei-explained/

One of the main antagonists of and Kaguya Otsutsuki's will incarnate, Black Zetsu managed to get his hands on the Rinnegan towards the end of the series.

Source: https://www.cbr.com/naruto-rinnegan-users-ranked/

"The Rinnegan cannot be awakened without possessing both Uchiha and Senju powers," Madara explained.

Source: https://screenrant.com/naruto-rinnegan-explained-madara-powers/

This was the first time Jiraiya saw the Rinnegan, which changed his mind about training them.

Source: https://www.cbr.com/when-does-naruto-fight-pain/