Anandakanda 1.15.35

1.15.35

jīvedbrahmadinaṃ sākṣāddaivataiḥ saha modate /
<brahmavṛkṣabījakalpaḥ>
brahmavṛkṣasya bījāni cūrṇayennikṣipedghaṭe //

He will live for a day of Brahmā and rejoice in the direct presence of the deities.
<Preparation of the Seeds of the Brahmā Tree>
One should powder the seeds of the brahmavṛkṣa and place them into an earthen jar.