Since Rahu had become immortal, Lord Brahma accepted him as one of the grahas, or planets, like the moon and the sun

Expressions researched:
"Since Rāhu had become immortal, Lord Brahmā accepted him as one of the grahas, or planets, like the moon and the sun"

Srimad-Bhagavatam

SB Canto 8

Since Rāhu had become immortal, Lord Brahmā accepted him as one of the grahas, or planets, like the moon and the sun. Rāhu, however, being an eternal enemy of the moon and sun, attacks them periodically during the nights of the full moon and the dark moon.

SB 8.9.26, Translation and Purport

Rāhu's head, however, having been touched by the nectar, became immortal. Thus Lord Brahmā accepted Rāhu's head as one of the planets. Since Rāhu is an eternal enemy of the moon and the sun, he always tries to attack them on the nights of the full moon and the dark moon.

Since Rāhu had become immortal, Lord Brahmā accepted him as one of the grahas, or planets, like the moon and the sun. Rāhu, however, being an eternal enemy of the moon and sun, attacks them periodically during the nights of the full moon and the dark moon.