Buddha-carita, or Life of Buddha by Ven. Aśvaghoṣa

Buddha-carita, or Life of Buddha - 181
64. The all-knowing Bodhisattva, the illuminated one, having thus
determined, after again pondering and meditating thus came to his
conclusion:
65. ‘This is pain, this also is the origin of pain in the world of living
beings; this also is the stopping of pain; this is that course which leads
to its stopping.’ So having determined he knew all as it really was.
66. Thus he, the holy one, sitting there on his seat of grass at the root
of the tree, pondering by his own efforts attained at last perfect
knowledge.
67. Then bursting the shell of ignorance, having gained all the various
kinds of perfect intuition, he attained all the partial knowledge of
alternatives which is included in perfect knowledge.
68. He became the perfectly wise, the Bhagavat, the Arhat, the king of
the Law, the Tathāgata, He who has attained the knowledge of all
forms, the Lord of all science.
69. Having beheld all this, the spirits standing in heaven spoke one to
another, ‘Strew flowers on this All-wise Monarch of Saints.’
70. While other immortals exclaimed, who knew the course of action
of the greatest among the former saints, ‘Do not now strew flowers –
no reason for it has been shown.’