What is the story of Mañjuśrī inspiring Śākyamuni?

नमो भगवते बुद्धाय I'm reading Candrakīrti's madhyamakavatāra. I came across this passage - > "That they are the particular circumstance means that that which acts > as the cause for the circumstance of being a tathāgata is the > circumstance of being a bodhisattva. That they inspire the adoption > refers to the case of noble Mañjuśrī who as a bodhisattva was the very > first to inspire the illustrious Śākyamuni and the other tathāgatas to > adopt the mind of awakening. Being thus regarded as the principal > cause that enabled the final result, it is taught that the tathāgatas > are born from the bodhisattvas." What is the story of the Noble Mañjuśrī inspiring Śākyamuni and other tathāgatas to adopt bodhicitta? Thank you Source - https://www2.hf.uio.no/polyglotta/index.php?page=fulltext&view=fulltext&vid=1113&cid=828169&mid=1927089&level=1#FN5550rn6:~:text=That%20they%20are%20the%20particular,are%20born%20from%20the%20bodhisattvas .